ci: [ATL-1640] add megalinter workflow

.github/workflows/megalinter.yml

@@ -0,0 +1,33 @@
+---
+name: Linter
+
+on:
+  push:
+    branches:
+      - main
+  pull_request:
+
+jobs:
+  lint:
+    name: Lint changes
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout Code
+        uses: actions/checkout@v3
+
+      - name: Mega-Linter
+        id: ml
+        uses: megalinter/megalinter@v6
+        env:
+          VALIDATE_ALL_CODEBASE: ${{ github.event_name == 'push' && github.ref == 'refs/heads/main' }}
+          DISABLE: COPYPASTE,SPELL
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Archive production artifacts
+        if: success() || failure()
+        uses: actions/upload-artifact@v2
+        with:
+          name: Mega-Linter reports
+          path: |
+            report
+            mega-linter.log