Add workflow for pushing tag when VERSION file changes

Signed-off-by: Yi Chen <github@chenyicn.net>

.github/workflows/push-tag.yaml

@@ -0,0 +1,44 @@
+name: Push Tag on VERSION change
+
+on:
+  push:
+    branches:
+      - master
+      - release-*
+    paths:
+      - VERSION
+
+jobs:
+  push_tag:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout source code
+        uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
+
+      - name: Set up Git
+        run: |
+          git config user.name "$GITHUB_ACTOR"
+          git config user.email "$GITHUB_ACTOR@users.noreply.github.com"
+
+      - name: Read version from VERSION file
+        run: |
+          VERSION=$(cat VERSION)
+          echo "VERSION=$VERSION" >> $GITHUB_ENV
+
+      - name: Check if tag exists
+        run: |
+          git fetch --tags
+          if git tag -l | grep -q "^${VERSION}$"; then
+            echo "TAG_EXISTS=true" >> $GITHUB_ENV
+          else
+            echo "TAG_EXISTS=false" >> $GITHUB_ENV
+          fi
+
+      - name: Create and push tag
+        if: env.TAG_EXISTS == 'false'
+        run: |
+          git tag -a "$VERSION" -m "Release $VERSION"
+          git push origin "$VERSION"

VERSION

@@ -0,0 +1 @@
+v1beta2-1.6.2-3.5.0