ci: Release drafting and autolabeler (#54)

* ci: Setup autolabeler and release drafting

* update workflow readme

.github/release-drafter.yml

@@ -0,0 +1,78 @@
+name-template: 'v$RESOLVED_VERSION'
+tag-template: 'v$RESOLVED_VERSION'
+categories:
+  - title: 'Breaking Changes'
+    lables:
+      - 'breaking'
+  - title: '🚀 Features'
+    labels:
+      - 'enhancement'
+  - title: '🐛 Bug Fixes'
+    labels:
+      - 'bug'
+  - title: '📄 Docs'
+    labels:
+      - 'docs'
+  - title: '🧰 Maintenance'
+    collapse-after: 5
+    labels:
+      - 'chore'
+      - 'build'
+      - 'ci'
+      - 'refactor'
+      - 'perf'
+change-template: '- $TITLE @$AUTHOR (#$NUMBER)'
+change-title-escapes: '\<*_&' # You can add # and @ to disable mentions, and add ` to disable code blocks.
+version-resolver:
+  major:
+    labels:
+      - 'breaking'
+  minor:
+    labels:
+      - 'enhancement'
+  patch:
+    labels:
+      - 'bug'
+      - 'perf'
+  default: patch
+template: |
+  ## Changes
+
+  $CHANGES
+# Assign labels to PRs
+autolabeler:
+  - label: 'docs'
+    files:
+      - docs/*
+    title:
+      - '/^docs/'
+  - label: 'breaking'
+    title:
+      - '/^[a-zA-Z0-9()]+!/'
+  - label: 'bug'
+    title:
+      - '/^fix/i'
+  - label: 'test'
+    title:
+      - '/^test/i'
+  - label: 'perf'
+    title:
+      - '/^perf/i'
+  - label: 'enhancement'
+    title:
+      - '/^feat/i'
+  - label: 'chore'
+    title:
+      - '/^chore/i'
+  - label: 'build'
+    title:
+      - '/^build/i'
+  - label: 'ci'
+    title:
+      - '/^ci/i'
+  - label: 'revert'
+    title:
+      - '/^revert/i'
+  - label: 'refactor'
+    title:
+      - '/^refactor/i'

.github/workflows/README.md

@@ -1,14 +1,14 @@
 # GitHub Actions for Dewy
 
-We currently have 3 workflows:
+We currently have the following workflows:
 
 1. `ci.yml` defines the CI process for the core service and clients.
-2. `lint-pr.yml` defines linting of the PR itself (comments, etc.).
+2. `lint-pr.yml`: Checks PRs for style, naming, and provides some automation.
+  - Verifies the title of the PR conforms to conventional commits.
+  - Runs an "autolabeler" to provide labels based on title and files touched.
 3. `site.yml` defines the build and deployment process for the site.
+4. `release-drafter.yml`: Generates draft release notes as PRs are merged.
 
 ## Future Improvements
 
-1. Release drafting / publishing.
-2. Assign labels to PRs based on directories touched (eg., `docs`, `service`, etc.) and
-   conventional commit (`fix`, `feature`, etc.).
-3. Require conditional checks https://github.com/marketplace/actions/require-conditional-status-checks
+- Require conditional checks https://github.com/marketplace/actions/require-conditional-status-checks

.github/workflows/lint-pr.yml

@@ -6,10 +6,27 @@ on:
       - edited
       - synchronize
 
+permissions:
+  contents: read
+
 jobs:
   lint_pr:
     runs-on: ubuntu-latest
     steps:
       - uses: amannn/action-semantic-pull-request@v5.4.0
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+
+  autolabeler:
+    permissions:
+      # write permission is required for autolabeler
+      # otherwise, read permission is required at least
+      pull-requests: write
+    runs-on: ubuntu-latest
+    steps:
+      # Drafts your next Release notes as Pull Requests are merged into "main"
+      - uses: release-drafter/release-drafter@v5
+        with:
+          disable-autolabeler: true
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

.github/workflows/release-drafter.yml

@@ -0,0 +1,26 @@
+name: Release Drafter
+
+on:
+  push:
+    # branches to consider in the event; optional, defaults to all
+    branches:
+      - main
+
+permissions:
+  contents: read
+
+jobs:
+  update_release_draft:
+    permissions:
+      # write permission is required to create a github release
+      contents: write
+      # read permission is required to list PRs
+      pull-requests: read
+    runs-on: ubuntu-latest
+    steps:
+      # Drafts your next Release notes as Pull Requests are merged into "main"
+      - uses: release-drafter/release-drafter@v5
+        with:
+          disable-autolabeler: true
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}