Create devskim.yml to enable GitHub code scanning for this repository (#700)

.github/workflows/devskim.yml

@@ -0,0 +1,32 @@
+# This workflow uses actions that are not certified by GitHub.
+# They are provided by a third-party and are governed by
+# separate terms of service, privacy policy, and support
+# documentation.
+
+name: DevSkim
+
+on:
+  pull_request:
+  push:
+    branches:
+      - main
+
+jobs:
+  lint:
+    name: DevSkim
+    runs-on: ubuntu-20.04
+    permissions:
+      actions: read
+      contents: read
+      security-events: write
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v3
+
+      - name: Run DevSkim scanner
+        uses: microsoft/DevSkim-Action@v1
+
+      - name: Upload DevSkim scan results to GitHub Security tab
+        uses: github/codeql-action/upload-sarif@v2
+        with:
+          sarif_file: devskim-results.sarif