feat: added git folder sync config

.github/sync.yml

@@ -0,0 +1,6 @@
+group:
+  - files:
+      - source: docs/
+        dest: docs/redoc
+    repos: |
+      Redocly/docs

.github/workflows/sync.yml

@@ -0,0 +1,16 @@
+name: Sync Files
+on:
+  push:
+    branches:
+      - master
+  workflow_dispatch:
+jobs:
+  sync:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout Repository
+        uses: actions/checkout@master
+      - name: Run GitHub File Sync
+        uses: Redocly/repo-file-sync-action
+        with:
+          GH_PAT: ${{ secrets.GH_PAT }}