ci: add release workflow

.github/workflows/release.yml

@@ -0,0 +1,35 @@
+name: Release
+
+on:
+  push:
+    branches:
+      - main
+      - release
+
+jobs:
+  release-please:
+    runs-on: ubuntu-latest
+    permissions:
+      contents: write # to create release commit
+      pull-requests: write # to create release PR
+    steps:
+      - uses: google-github-actions/release-please-action@v3
+        id: release
+        with:
+          token: ${{ secrets.GITHUB_TOKEN }}
+          release-type: go
+          package-name: actions-testing
+          changelog-types: >
+            [
+              { "type": "build", "section": "Build System", "hidden": false },
+              { "type": "ci", "section": "Continuous Integration", "hidden": false },
+              { "type": "chore", "section": "Misc", "hidden": false },
+              { "type": "docs", "section": "Documentation", "hidden": false },
+              { "type": "feat", "section": "Features", "hidden": false },
+              { "type": "fix", "section": "Bug Fixes", "hidden": false },
+              { "type": "perf", "section": "Performance Improvements", "hidden": false },
+              { "type": "revert", "section": "Reverts", "hidden": false },
+              { "type": "refactor", "section": "Code Refactoring", "hidden": false },
+              { "type": "style", "section": "Styles", "hidden": false },
+              { "type": "test", "section": "Tests", "hidden": false }
+            ]