Create check_downport

Author: oblomov-dev

.github/workflows/check_downport

@@ -0,0 +1,20 @@
+name: check_downport
+
+on:
+  pull_request:
+
+jobs:
+  auto_downport:
+    runs-on: ubuntu-latest
+    timeout-minutes: 10
+    steps:
+    - name: Checkout Repository
+      uses: actions/checkout@v3
+
+    - name: Set up Node.js
+      uses: actions/setup-node@v3
+      with:
+        node-version: '16'
+
+    - run: npm ci
+    - run: npm run downport