ci: add cd pipeline for updating packgaist

Author: GigaGiorgadze

.github/workflows/update-packagist.yml

@@ -0,0 +1,22 @@
+name: "Update Packagist"
+
+on:
+  push:
+    branches:
+      - main
+jobs:
+  update:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+        with:
+          ref: ${{ github.head_ref }}
+      - name: Update Packagist
+        uses: mnavarrocarter/packagist-update@v1.0.0
+        with:
+          username: "Redberry LTD"
+          api_token: ${{ secrets.PACKAGIST_TOKEN }}
+
+

CHANGELOG.md

@@ -0,0 +1,7 @@
+# Changelog
+
+All notable changes to `page-builder-plugin` will be documented in this file.
+
+## 1.0.0 - 202X-XX-XX
+
+- initial release

README.md

@@ -167,6 +167,7 @@ $form->schema([
     PageBuilder::make('website_content')
         ->reorderable(),
 ]);
+
 ```
 
 ### Previewing in real time with iframe