chore(workflows): add CI workflows and configuration files

- Add default merge message template for PRs
- Introduce workflow for major version tag creation on release
- Add workflow for auto changelog and release generation
- Add git-cliff configuration for changelog formatting
- Configure `.vscode` workspace settings and `.gitignore` updates

.gitea/workflows/release.yml

@@ -0,0 +1,19 @@
+name: Auto Changelog & Release
+
+on:
+  push:
+    branches:
+      - main
+      - "**"
+
+jobs:
+  release:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
+      - name: Release
+        uses: https://git.0xmax42.io/actions/auto-changelog-release-action@v0
+        with:
+          token: ${{ secrets.RELEASE_PUBLISH_TOKEN }}