chore: add GitHub config (#11)

.github/ISSUE_TEMPLATE/bug-report.md

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+---
+name: Bug Report
+about: Report defective or unintentional behavior you've experienced.
+title: "Brief summary of what bug or error was observed"
+labels: 'type: bug'
+
+---
+
+<!--
+
+Thanks for stopping by to let us know something could be better!
+
+**PLEASE READ**: If you have a support contract with Google, please create an
+issue in the [support console](https://cloud.google.com/support/) instead of
+filing on GitHub. This will ensure a timely response.
+
+Please run down the following list and make sure you've tried the usual "quick fixes":
+
+  - Search the issues already opened: https://github.com/GoogleCloudPlatform/alloydb-go-connector/issues
+  - Check for answers on StackOverflow: https://stackoverflow.com/questions/tagged/google-alloydb
+
+If you are still having issues, please include as much information as possible:
+
+-->
+
+## Bug Description
+
+Please enter a detailed description of the bug, and any information about what
+behavior you noticed and why it is defective or unintentional.
+
+## Example code (or command)
+
+```go
+// example
+```
+
+## Stacktrace
+```
+Any relevant stacktrace here. Be sure to filter sensitive information.
+```
+
+## How to reproduce
+
+  1. ?
+  2. ?
+
+## Environment
+
+1. OS type and version: <YOUR_OS_HERE>
+2. Proxy version: <YOUR_VERSION_HERE>

.github/ISSUE_TEMPLATE/config.yml

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+# Copyright 2022 Google LLC
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+blank_issues_enabled: false
+contact_links:
+- name: AlloyDB Issue tracker
+  url: https://cloud.google.com/support/docs/issue-trackers
+  about: Please use the AlloyDB Issue tracker for problems with AlloyDB itself.
+- name: StackOverflow
+  url: https://stackoverflow.com/questions/tagged/google-alloydb
+  about: Please use the `google-alloydb` tag for questions on StackOverflow.

.github/ISSUE_TEMPLATE/documentation-issue.md

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+---
+name: Documentation Issue
+about: Report wrong or missing information with the documentation in the repo.
+title: "Brief summary of what is missing or incorrect"
+labels: 'type: docs'
+
+---
+
+<!--
+
+Thanks for stopping by to let us know something could be better!
+
+**PLEASE READ**: If you have a support contract with Google, please create an
+issue in the [support console](https://cloud.google.com/support/) instead of
+filing on GitHub. This will ensure a timely response.
+
+Please run down the following list and make sure you've tried the usual "quick fixes":
+
+  - Search the issues already opened: https://github.com/GoogleCloudPlatform/alloydb-go-connector/issues
+  - Check for answers on StackOverflow: https://stackoverflow.com/questions/tagged/google-alloydb
+
+If you are still having issues, please include as much information as possible:
+
+-->
+## Description
+Provide a short description of what is missing or incorrect, as well as a link
+to the specific location of the information.
+
+## Solution
+What would you prefer the documentation say? Why would this information be more
+accurate or helpful?
+
+## Additional Context
+Please reference any other relevant issues, PRs, descriptions, or screenshots
+here.

.github/ISSUE_TEMPLATE/feature-request.md

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+---
+name: Feature Request
+about: Suggest an idea for new or improved behavior.
+title: "Brief summary of the proposed feature"
+labels: 'type: feature request'
+
+---
+
+<!--
+
+Thanks for stopping by to let us know something could be better!
+
+**PLEASE READ**: If you have a support contract with Google, please create an
+issue in the [support console](https://cloud.google.com/support/) instead of
+filing on GitHub. This will ensure a timely response.
+
+Please run down the following list and make sure you've tried the usual "quick fixes":
+
+  - Search the issues already opened: https://github.com/GoogleCloudPlatform/alloydb-go-connector/issues
+  - Check for answers on StackOverflow: https://stackoverflow.com/questions/tagged/google-alloydb
+
+If you are still having issues, please include as much information as possible:
+
+-->
+## Feature Description
+A clear and concise description of what feature you would like to see, and why
+it would be useful to have added.
+
+## Alternatives Considered
+Are there any workaround or third party tools to replicate this behavior? Why
+would adding this feature be preferred over them?
+
+## Additional Context
+Please reference any other issues, PRs, descriptions, or screenshots here.

.github/ISSUE_TEMPLATE/question.md

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+---
+name: Question
+about: Questions on how something works or the best way to do something.
+title: "Brief summary of your question"
+labels: 'type: question'
+
+---
+
+<!--
+
+  Thanks for stopping by to let us know something could be better!
+
+**PLEASE READ**: If you have a support contract with Google, please create an
+  issue in the [support console](https://cloud.google.com/support/) instead of
+  filing on GitHub. This will ensure a timely response.
+
+         Please run down the following list and make sure you've tried the usual "quick fixes":
+
+         - Search the issues already opened: https://github.com/GoogleCloudPlatform/alloydb-go-connector/issues
+         - Check for answers on StackOverflow: https://stackoverflow.com/questions/tagged/google-alloydb
+
+         If you are still having issues, please include as much information as possible:
+
+  -->
+
+## Question
+What's your question? Please provide as much relevant information as possible
+to reduce turnaround time.
+
+## Additional Context
+Please reference any other relevant issues, PRs, descriptions, or screenshots
+here.

.github/PULL_REQUEST_TEMPLATE.md

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+## Change Description
+
+Please provide a detailed description on what changes your PR will have.
+
+
+## Checklist
+
+- [ ] Make sure to open an issue as a 
+  [bug/issue](https://github.com/GoogleCloudPlatform//issues/new/choose) 
+  before writing your code!  That way we can discuss the change, evaluate 
+  designs, and agree on the general idea.
+- [ ] Ensure the tests and linter pass
+- [ ] Appropriate documentation is updated (if necessary)
+
+## Relevant issues:
+
+- Fixes #<issue_number_goes_here>

.github/blunderbuss.yml

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+# Copyright 2022 Google LLC
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     https://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+assign_issues:
+  - enocom
+assign_prs:
+  - enocom

.github/header-checker-lint.yml

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+# Copyright 2022 Google LLC
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     https://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+allowedCopyrightHolders:
+  - 'Google LLC'
+allowedLicenses:
+  - 'Apache-2.0'
+sourceFileExtensions:
+  - 'go'
+  - 'yaml'
+  - 'yml'

.github/labels.yml

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+# Copyright 2022 Google LLC
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+- name: duplicate
+  color: ededed
+  description: ""
+
+- name: 'type: bug'
+  color: db4437
+  description: Error or flaw in code with unintended results or allowing sub-optimal
+    usage patterns.
+- name: 'type: cleanup'
+  color: c5def5
+  description: An internal cleanup or hygiene concern.
+- name: 'type: docs'
+  color: 0000A0
+  description: Improvement to the documentation for an API.
+- name: 'type: feature request'
+  color: c5def5
+  description: ‘Nice-to-have’ improvement, new feature or different behavior or design.
+- name: 'type: process'
+  color: c5def5
+  description: A process-related concern. May include testing, release, or the like.
+- name: 'type: question'
+  color: c5def5
+  description: Request for information or clarification.
+
+- name: 'priority: p0'
+  color: b60205
+  description: Highest priority. Critical issue. P0 implies highest priority.
+- name: 'priority: p1'
+  color: ffa03e
+  description: Important issue which blocks shipping the next release. Will be fixed
+    prior to next release.
+- name: 'priority: p2'
+  color: fef2c0
+  description: Moderately-important priority. Fix may not be included in next release.
+- name: 'priority: p3'
+  color: ffffc7
+  description: Desirable enhancement or fix. May not be included in next release.
+
+- name: automerge
+  color: 00ff00
+  description: Merge the pull request once unit tests and other checks pass.
+- name: 'automerge: exact'
+  color: 8dd517
+  description: Summon MOG for automerging, but approvals need to be against the latest
+    commit
+- name: do not merge
+  color: d93f0b
+  description: Indicates a pull request not ready for merge, due to either quality
+    or timing.
+
+- name: 'autorelease: pending'
+  color: ededed
+  description: Release please needs to do its work on this.
+
+- name: 'autorelease: tagged'
+  color: ededed
+  description: Release please has completed a release for this.

.github/renovate.json

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+{
+  "extends": [
+    "config:base",
+    ":semanticCommitTypeAll(chore)"
+  ],
+  "ignorePresets": [":semanticPrefixFixDepsChoreOthers"],
+  "prConcurrentLimit": 0,
+  "rebaseStalePrs": true,
+  "dependencyDashboard": true,
+  "semanticCommits": true,
+  "postUpdateOptions": [
+    "gomodTidy"
+  ],
+  "packageRules": [
+     {
+       "matchPackagePatterns": [".*"],
+       "addLabels": ["automerge"]
+     }
+  ],
+  "schedule": [
+    "after 8am on Friday",
+    "before 12pm on Friday"
+  ]
+}

.github/workflows/cover.yaml

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+# Copyright 2022 Google LLC
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+name: code coverage
+on: [pull_request]
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Setup Go
+        uses: actions/setup-go@v3
+        with:
+          go-version: "1.18"
+
+      - name: Checkout base branch
+        uses: actions/checkout@v3
+        with:
+          ref: ${{ github.base_ref }}
+      - name: Calculate base code coverage
+        run: |
+          go test -short -coverprofile current_cover.out ./... || true
+          export CUR_COVER=$(go tool cover -func current_cover.out | grep total | awk '{print substr($3, 1, length($3)-1)}')
+          echo "CUR_COVER=$CUR_COVER" >> $GITHUB_ENV
+
+      - name: Checkout PR branch
+        uses: actions/checkout@v3
+      - name: Calculate PR code coverage
+        run: |
+          go test -short -coverprofile pr_cover.out ./... || true
+          export PR_COVER=$(go tool cover -func pr_cover.out | grep total | awk '{print substr($3, 1, length($3)-1)}')
+          echo "PR_COVER=$PR_COVER" >> $GITHUB_ENV
+
+      - name: Verify code coverage. If your reading this and the step has failed, please add tests to cover your changes.
+        run: |
+          go tool cover -func pr_cover.out
+          if [ "${{ env.PR_COVER }}" -lt "${{ env.CUR_COVER }}"  ]; then
+            exit 1;
+          fi