workflows: check commit for ignored files

Author: IvanGoncharov

.DS_Store

@@ -119,3 +119,20 @@ jobs:
 
       - name: Run Tests
         run: npm run testonly
+
+  checkForCommonlyIgnoredFiles:
+    name: Check for commonly ignored files
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout repo
+        uses: actions/checkout@v2
+
+      - name: Check if commit contains files that should be ignored
+        run: |
+          git clone --depth 1 https://github.com/github/gitignore.git &&
+          cat gitignore/Node.gitignore $(find gitignore/Global -name "*.gitignore" | grep -v ModelSim) > all.gitignore &&
+          if  [[ "$(git ls-files -iX all.gitignore)" != "" ]]; then
+            echo "::error::Please remove these files:"
+            git ls-files -iX all.gitignore
+            exit 1
+          fi