chore: github form templates

.github/ISSUE_TEMPLATE/bug.yml

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+# https://docs.github.com/en/communities/using-templates-to-encourage-useful-issues-and-pull-requests/syntax-for-githubs-form-schema
+name: Bug Report
+description: Report a bug
+labels:
+  - kind/bug
+  - status/triage
+
+body:
+  - type: checkboxes
+    attributes:
+      label: Support guidelines
+      description: Please read the support guidelines before proceeding.
+      options:
+        - label: I've read the [support guidelines](https://github.com/crazy-max/docker-rrdcached/blob/master/.github/SUPPORT.md)
+          required: true
+
+  - type: checkboxes
+    attributes:
+      label: I've found a bug and checked that ...
+      description: |
+        Make sure that your request fulfills all of the following requirements. If one requirement cannot be satisfied, explain in detail why.
+      options:
+        - label: ... the documentation does not mention anything about my problem
+        - label: ... there are no open or closed issues that are related to my problem
+
+  - type: textarea
+    attributes:
+      label: Description
+      description: |
+        Please provide a brief description of the bug in 1-2 sentences.
+    validations:
+      required: true
+
+  - type: textarea
+    attributes:
+      label: Expected behaviour
+      description: |
+        Please describe precisely what you'd expect to happen.
+    validations:
+      required: true
+
+  - type: textarea
+    attributes:
+      label: Actual behaviour
+      description: |
+        Please describe precisely what is actually happening.
+    validations:
+      required: true
+
+  - type: textarea
+    attributes:
+      label: Steps to reproduce
+      description: |
+        Please describe the steps to reproduce the bug.
+      placeholder: |
+        1. ...
+        2. ...
+        3. ...
+    validations:
+      required: true
+
+  - type: textarea
+    attributes:
+      label: Docker info
+      description: |
+        Output of `docker info` command.
+      render: text
+    validations:
+      required: true
+
+  - type: textarea
+    attributes:
+      label: Docker Compose config
+      description: |
+        Output of `docker compose config` command.
+      render: yaml
+
+  - type: textarea
+    attributes:
+      label: Logs
+      description: |
+        Please provide the container logs (set `LOG_LEVEL=debug` if applicable).
+      render: text
+    validations:
+      required: true
+
+  - type: textarea
+    attributes:
+      label: Additional info
+      description: |
+        Please provide any additional information that seem useful.

.github/ISSUE_TEMPLATE/config.yml

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+# https://docs.github.com/en/communities/using-templates-to-encourage-useful-issues-and-pull-requests/configuring-issue-templates-for-your-repository#configuring-the-template-chooser
+blank_issues_enabled: true
+contact_links:
+  - name: Questions and Discussions
+    url: https://github.com/crazy-max/docker-rrdcached/discussions/new
+    about: Use Github Discussions to ask questions and/or open discussion topics.

.github/ISSUE_TEMPLATE/feature.yml

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+# https://docs.github.com/en/communities/using-templates-to-encourage-useful-issues-and-pull-requests/syntax-for-githubs-form-schema
+name: Feature request
+description: Missing functionality? Come tell us about it!
+labels:
+  - kind/enhancement
+  - status/triage
+
+body:
+  - type: textarea
+    id: description
+    attributes:
+      label: Description
+      description: What is the feature you want to see?
+    validations:
+      required: true