ci: add linter workflow

.github/workflows/linter.yml

@@ -0,0 +1,22 @@
+name: Lint
+
+on: [pull_request]
+
+jobs:
+  lint:
+    name: Lint
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout Code
+        uses: actions/checkout@v2
+        with:
+          fetch-depth: 0
+
+      - name: Lint Code Base
+        uses: github/super-linter@v3
+        env:
+          VALIDATE_ALL_CODEBASE: false
+          DEFAULT_BRANCH: v3.x
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+          FILTER_REGEX_INCLUDE: .*src/.*