Add CodeQL scanning (PHNX-XXXX)

.github/workflows/codeql.yml

@@ -0,0 +1,69 @@
+name: "CodeQL"
+
+on:
+  push:
+    branches: [main, master]
+    paths:
+    - 'src/**/*'
+    - '.github/**/*'
+    - '!**/*.md'
+    - '!**/*.txt'
+  pull_request:
+    branches: [main, master]
+    paths:
+    - 'src/**/*'
+    - '.github/**/*'
+    - '!**/*.md'
+    - '!**/*.txt'
+  schedule:
+  - cron: '17 18 * * 4'
+
+jobs:
+  analyze:
+    name: Analyze (${{ matrix.language }})
+    runs-on: ubuntu-latest
+
+    permissions:
+      security-events: write
+      packages: read
+      actions: read
+      contents: read
+
+    strategy:
+      fail-fast: false
+      matrix:
+        include:
+        - language: csharp
+          build-mode: manual
+        - language: actions
+          build-mode: none
+
+    steps:
+    - name: Checkout repository
+      uses: actions/checkout@v4
+
+    - name: Initialize CodeQL
+      uses: github/codeql-action/init@v3
+      with:
+        languages: ${{ matrix.language }}
+        build-mode: ${{ matrix.build-mode }}
+        dependency-caching: true
+
+    - if: matrix.build-mode == 'manual'
+      name: Setup .NET
+      uses: actions/setup-dotnet@v4
+      with:
+        dotnet-version: |
+          8.0.x
+          10.0.x
+
+
+    - if: matrix.build-mode == 'manual'
+      name: Build
+      working-directory: ./src
+      run: dotnet build -c Release ./Shawarma.AspNetCore.slnx
+
+    - name: Perform CodeQL Analysis
+      uses: github/codeql-action/analyze@v3
+      with:
+        category: "/language:${{matrix.language}}"