Lets try out this gh-action (#7875)

* Update blank.yml

* Update and rename blank.yml to tslint.yml

* Update tslint.yml

* Update tslint.yml

* Update tslint.yml

* Update tslint.yml

.github/workflows/tslint.yml

@@ -0,0 +1,13 @@
+name: TSLint Enforcement
+on: [pull_request]
+jobs:
+  job:
+    runs-on: ubuntu-latest
+    timeout-minutes: 5
+    steps:
+      - uses: actions/checkout@v1
+      - name: TSLint
+        uses: aaomidi/gh-action-tslint@master
+        with:
+          token: ${{ secrets.GITHUB_TOKEN }}
+          tslint_config: 'tslint-sql.json'