ci: Add workflow for automated tagging

Author: DaleSeo

.github/workflows/tagging.yml

@@ -0,0 +1,44 @@
+name: Tagging 🏷️
+
+on:
+  pull_request:
+    types: [closed]
+    branches: [main]
+  workflow_dispatch:
+    inputs:
+      version:
+        description: "Version to release (e.g., 1.2.3)"
+        required: true
+        type: string
+
+jobs:
+  create-tag:
+    if: |
+      github.event_name == 'workflow_dispatch' ||
+      (github.event.pull_request.merged == true && startsWith(github.event.pull_request.head.ref, 'release/'))
+    runs-on: ubuntu-latest
+    permissions:
+      contents: write
+    steps:
+      - uses: actions/checkout@v6
+
+      - name: Determine version
+        id: version
+        run: |
+          if [ "${{ github.event_name }}" == "workflow_dispatch" ]; then
+            VERSION="${{ inputs.version }}"
+          else
+            VERSION=$(echo "${{ github.event.pull_request.head.ref }}" | sed 's|^release/||')
+          fi
+          if [[ ! "$VERSION" =~ ^[0-9]+\.[0-9]+\.[0-9]+$ ]]; then
+            echo "Invalid version format: $VERSION"
+            exit 1
+          fi
+          echo "version=$VERSION" >> $GITHUB_OUTPUT
+
+      - uses: fregante/setup-git-user@v2
+
+      - name: Bump version and push tag
+        run: |
+          npm version ${{ steps.version.outputs.version }}
+          git push origin ${{ github.ref_name }} --tags