Add CodeQL Analysis workflow (open-telemetry#565)

.github/workflows/CodeQL-Analysis.yml

@@ -0,0 +1,30 @@
+name: "CodeQL Analysis"
+on:
+  push:
+    branches:
+      - main
+  pull_request:
+    branches:
+      - main
+
+jobs:
+  security-scan:
+    name: Run CodeQL Analysis
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v3
+
+      - name: Set up CodeQL
+        uses: github/codeql-action/init@v2
+        with:
+          languages: 'swift'
+
+      - name: Autobuild
+        uses: github/codeql-action/autobuild@v2
+
+      - name: Run CodeQL Analysis
+        uses: github/codeql-action/analyze@v2
+        with:
+          category: security