feat: changelog automation

Signed-off-by: Gita Alekhya Paul <54375111+gitaalekhyapaul@users.noreply.github.com>

.github/changelog-config.yml

@@ -0,0 +1,22 @@
+changelog:
+  exclude:
+    labels:
+      - ignore-for-release
+    authors:
+      - dependabot
+  categories:
+    - title: 🚀 Features
+      labels:
+        - enhancement
+        - feature
+    - title: 🐛 Bug Fixes
+      labels:
+        - bug
+        - fix
+    - title: 🧰 Maintenance
+      labels:
+        - chore
+        - dependencies
+    - title: 📝 Documentation
+      labels:
+        - documentation

.github/workflows/changelog.yml

@@ -0,0 +1,34 @@
+name: Generate Changelog
+
+on:
+  release:
+    types: [created]
+
+jobs:
+  generate-changelog:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
+
+      - name: Generate Changelog
+        run: |
+          # Install github-changelog-generator if not using container
+          gem install github_changelog_generator
+
+          # Generate changelog
+          github_changelog_generator \
+            -u ${{ github.repository_owner }} \
+            -p ${{ github.event.repository.name }} \
+            --token ${{ secrets.GITHUB_TOKEN }} \
+            --since-tag $(git describe --tags --abbrev=0 `git rev-list --tags --skip=1 --max-count=1`) \
+            --future-release ${{ github.event.release.tag_name }}
+
+      - name: Commit and Push Changelog
+        run: |
+          git config --local user.email "action@github.com"
+          git config --local user.name "GitHub Action"
+          git add CHANGELOG.md
+          git commit -m "docs: update changelog for ${{ github.event.release.tag_name }}"
+          git push

README.md

@@ -350,3 +350,21 @@ TOKEN_DETAILS_PATH=token.jsonc
 - Express.js: https://expressjs.com/ ⚡
 - Tailwind CSS: https://tailwindcss.com/docs 💅
 - TypeScript: https://www.typescriptlang.org/docs/ 📘
+
+## 📝 Contributing
+
+### Commit Message Format
+
+Follow these commit message guidelines to automate changelog generation:
+
+- `feat: add new feature` - New features (generates under 🚀 Features)
+- `fix: resolve bug` - Bug fixes (generates under 🐛 Bug Fixes)
+- `docs: update readme` - Documentation changes (generates under 📝 Documentation)
+- `chore: update deps` - Maintenance (generates under 🧰 Maintenance)
+
+Example:
+
+```bash
+git commit -m "feat: add OAuth support for Discord"
+git commit -m "fix: resolve token validation issue"
+```