Enhance GitHub release workflow with automatic release creation

- Added release name/title (Math vX.Y.Z)
- Automatically extracts changelog for the version
- Adds documentation link to every release
- Includes installation instructions in release notes
- Enables GitHub's automatic release notes generation
- Marks alpha/beta/rc versions as pre-releases
- Outputs version for test-installation job

When a tag (v*.*.*) is pushed, the workflow will:
1. Run tests
2. Build release
3. Extract changelog
4. Create GitHub release with formatted notes
5. Test installation on Ubuntu and macOS

Author: PinkQween

.github/workflows/release.yml

@@ -11,6 +11,8 @@ jobs:
     runs-on: ubuntu-latest
     permissions:
       contents: write
+    outputs:
+      version: ${{ steps.version.outputs.VERSION }}
 
     steps:
       - name: Checkout code
@@ -42,14 +44,32 @@ jobs:
           # If empty, use a default message
           if [ ! -s release_notes.md ]; then
             echo "Release $VERSION" > release_notes.md
+            echo "" >> release_notes.md
+            echo "See [CHANGELOG.md](https://github.com/PinkQween/Math/blob/main/CHANGELOG.md) for details." >> release_notes.md
           fi
 
+          # Add documentation link
+          echo "" >> release_notes.md
+          echo "---" >> release_notes.md
+          echo "" >> release_notes.md
+          echo "📚 **Documentation:** https://math.hannaskairipa.com" >> release_notes.md
+          echo "" >> release_notes.md
+          echo "## Installation" >> release_notes.md
+          echo "" >> release_notes.md
+          echo '```swift' >> release_notes.md
+          echo 'dependencies: [' >> release_notes.md
+          echo "    .package(url: \"https://github.com/PinkQween/Math.git\", from: \"$VERSION\")" >> release_notes.md
+          echo ']' >> release_notes.md
+          echo '```' >> release_notes.md
+
       - name: Create GitHub Release
         uses: softprops/action-gh-release@v1
         with:
+          name: "Math v${{ steps.version.outputs.VERSION }}"
           body_path: release_notes.md
           prerelease: ${{ contains(github.ref, 'alpha') || contains(github.ref, 'beta') || contains(github.ref, 'rc') }}
           draft: false
+          generate_release_notes: true
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}