Add CodeQL pipeline (#2)

.github/workflows/codeql-analysis.yml

@@ -0,0 +1,41 @@
+name: CodeQL Analysis
+
+on:
+  push:
+  pull_request:
+  schedule:
+    - cron: '0 8 * * *'
+  workflow_dispatch:
+
+jobs:
+  analyze:
+    name: Analyze
+    runs-on: windows-latest
+    steps:
+      - name: Add msbuild to PATH
+        uses: microsoft/setup-msbuild@v1.0.2
+
+      - name: Checkout repository
+        id: checkout_repo
+        uses: actions/checkout@v2
+
+      - name: Initialize CodeQL
+        id: init_codeql
+        uses: github/codeql-action/init@v1
+        with:
+          languages: csharp
+          queries: security-and-quality
+
+      - name: Build solution
+        id: build_solution
+        run: |
+          nuget restore .\src\Calculator.sln
+          msbuild .\src\Calculator.sln `
+          /p:Configuration=Release `
+          /p:Platform=x64
+
+      - name: Perform CodeQL Analysis
+        id: analyze_codeql
+        uses: github/codeql-action/analyze@v1
+
+# Built with ❤ by [Pipeline Foundation](https://pipeline.foundation)