add assets sync workflow

Author: kilbot

.github/workflows/sync-wporg-assets.yml

@@ -0,0 +1,16 @@
+name: Sync assets with wordpress.org
+
+on:
+  push:
+
+jobs:
+  run:
+    runs-on: ubuntu-latest
+    name: Push assets to wporg
+    steps:
+        - uses: actions/checkout@v4
+        - name: WordPress.org plugin asset/readme update
+          uses: 10up/action-wordpress-plugin-asset-update@stable
+          env:
+            SVN_PASSWORD: ${{ secrets.SVN_PASSWORD }}
+            SVN_USERNAME: ${{ secrets.SVN_USERNAME }}