chore: update & document release process

Author: Vott

RELEASE_GUIDE.md

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+# Overview
+
+[![Build Status](https://dev.azure.com/msft-vott/VoTT/_apis/build/status/VoTT/Create%20Release?branchName=master)](https://dev.azure.com/msft-vott/VoTT/_build/latest?definitionId=55&branchName=master)
+
+Instruction on how to create new GitHub & Web Releases.
+
+## Release Process
+
+![alt text](./docs/images/release-process.png "Create Release Process")
+
+## Versioning
+
+Follow [NPM Semantic Versioning](https://docs.npmjs.com/about-semantic-versioning#incrementing-semantic-versions-in-published-packages)
+
+| Code status                               | Stage         | Rule                                                               | Example version |
+| ----------------------------------------- | ------------- | ------------------------------------------------------------------ | --------------- |
+| First release                             | New product   | Start with 1.0.0                                                   | 1.0.0           |
+| Backward compatible bug fixes             | Patch release | Increment the third digit                                          | 1.0.1           |
+| Backward compatible new features          | Minor release | Increment the middle digit and reset last digit to zero            | 1.1.0           |
+| Changes that break backward compatibility | Major release | Increment the first digit and reset middle and last digits to zero | 2.0.0           |
+
+### Commands
+
+The pipeline use [npm-version](https://docs.npmjs.com/cli/version) to update version
+
+### Pre
+
+All version with `pre`, ie. `preminor` will bump the appropriate didgit & append `-0` to the new version
+
+Examples:
+
+`npm version prepatch`
+
+1. v2.3.0 --> v2.3.1-0
+1. v2.3.1-0 --> v2.3.2-0
+
+`npm version preminor`
+
+1. v2.3.0 --> v2.4.0-0
+1. v2.4.0-0 --> v2.5.0-0
+
+#### Exception
+
+`prerelease` behave similar to prepatch, but would increment the last digit.
+
+Examples:
+
+`npm version prerelease`
+
+v2.3.0 --> v2.3.1-0
+
+v2.3.0-0 --> v2.3.0-1
+
+### Major
+
+v2.x.x --> v3.0.0
+
+### Minor
+
+v2.2.0 --> v2.3.0

azure-pipelines/create-release.yml

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+name: "GitHub & Web Release [$(SourceBranchName)] - $(Date:yyyyMMdd)$(Rev:.r)"
+
+trigger: none # manual queue only when we're ready to release
+pr: none # disable CI build for PR
+
+variables:
+  azureSubscription: "pj-little-sub"
+  DEV_STORAGE_ACCOUNT: 'vottdev'
+  PROD_STORAGE_ACCOUNT: 'vott'
+  DEV_URL: "https://vottdev.z5.web.core.windows.net/"
+  PROD_URL: "https://vott.z22.web.core.windows.net/"
+
+stages:
+- stage: version_bump_commit
+  jobs:
+    - template: templates/npm-version-bump.yml
+      parameters:
+        versionType: $(NPM_VERSION_TYPE)
+
+- stage: github_release
+  dependsOn: version_bump_commit
+  jobs:
+  - template: templates/create-github-release.yml
+    parameters:
+      GitHubConnection: 'GitHub connection' # defaults for any parameters that aren't specified
+      repositoryName: '$(Build.Repository.Name)' # microsoft/VoTT
+      isPreRelease: $(IS_PRERELEASE) # set when queuing build
+      isDraft: $(IS_DRAFT)
+
+- stage: web_release
+  dependsOn: version_bump_commit
+  jobs:
+  - template: templates/create-web-release.yml