Add GitHub Actions workflow for automatic tagging on master merge

.github/workflows/auto-tag.yml

@@ -0,0 +1,41 @@
+name: Auto Tag on Master Merge
+
+on:
+  push:
+    branches:
+      - master
+      - main
+
+jobs:
+  tag:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
+
+      - name: Get version from package.json
+        id: package-version
+        run: |
+          VERSION=$(node -p "require('./package.json').version")
+          echo "version=v$VERSION" >> $GITHUB_OUTPUT
+
+      - name: Check if tag exists
+        id: check-tag
+        run: |
+          if git rev-parse "${{ steps.package-version.outputs.version }}" >/dev/null 2>&1; then
+            echo "exists=true" >> $GITHUB_OUTPUT
+          else
+            echo "exists=false" >> $GITHUB_OUTPUT
+          fi
+
+      - name: Create tag
+        if: steps.check-tag.outputs.exists == 'false'
+        run: |
+          git config user.name "github-actions[bot]"
+          git config user.email "github-actions[bot]@users.noreply.github.com"
+          git tag -a "${{ steps.package-version.outputs.version }}" -m "Release ${{ steps.package-version.outputs.version }}"
+          git push origin "${{ steps.package-version.outputs.version }}"
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}