Add workflow to update when pushing theme submodule update

.github/workflows/update-theme-submodule.yaml

@@ -0,0 +1,29 @@
+name: Update Post45 Theme Submodule
+
+on:
+  push:
+    paths:
+      - 'plugins/themes/post45'
+  workflow_dispatch:  # Add this line to allow manual triggering
+
+jobs:
+  update-submodule:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Checkout repository
+      uses: actions/checkout@v2
+      with:
+        submodules: true
+
+    - name: Update submodule
+      run: |
+        cd plugins/themes/post45
+        git pull origin main
+
+    - name: Deploy to Azure Web App
+      uses: azure/webapps-deploy@v2
+      with:
+        app-name: ${{ secrets.AZURE_WEBAPP_NAME }}
+        publish-profile: ${{ secrets.AZURE_WEBAPP_PUBLISH_PROFILE }}
+        package: .  # Deploy the updated repository