Add GitHub Actions workflow for preview updates

Author: andrey-helldar

.github/workflows/preview.yml

@@ -0,0 +1,24 @@
+name: Preview Updater
+
+on:
+    schedule:
+        -   cron: '20 2 * * *'
+    workflow_dispatch:
+
+permissions:
+    contents: write
+    pull-requests: write
+
+jobs:
+    preview:
+        runs-on: ubuntu-latest
+
+        steps:
+            -   uses: actions/checkout@v6
+                with:
+                    fetch-depth: 0
+
+            -   name: Update banner
+                uses: TheDragonCode/preview-updater@v1
+                with:
+                    token: ${{ secrets.GITHUB_TOKEN }}