Add CodeQL workflow for GitHub code scanning

.github/workflows/codeql.yml

@@ -0,0 +1,70 @@
+name: "CodeQL"
+
+on:
+  push:
+    branches: [ "master" ]
+  pull_request:
+    branches: [ "master" ]
+  schedule:
+    - cron: "12 7 * * 0"
+
+jobs:
+  analyze:
+    name: Analyze
+    runs-on: ubuntu-latest
+    permissions:
+      actions: read
+      contents: read
+      security-events: write
+
+    strategy:
+      fail-fast: false
+      matrix:
+        language: [ python, cpp ]
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v3
+
+      - name: Install Packages (cpp)
+        if: ${{ matrix.language == 'cpp' }}
+        run: |
+          sudo apt-get update
+          sudo apt-get install --yes python3-pip
+
+      - name: Configure (cpp)
+        if: ${{ matrix.language == 'cpp' }}
+        run: python3 cmakegen.py
+
+      - name: After Prepare (cpp)
+        if: ${{ matrix.language == 'cpp' }}
+        run: |
+          pip3 install wheel cmake conan
+          export PATH=~/.local/bin:$PATH && echo "PATH=$PATH" >> $GITHUB_ENV
+          cmake --version
+          conan --version
+          conan profile new default --detect
+          conan profile update settings.compiler.version=9 default
+          conan profile update settings.compiler.libcxx=libstdc++11 default
+          conan remote update conancenter https://center.conan.io False
+
+      - name: Initialize CodeQL
+        uses: github/codeql-action/init@v2
+        with:
+          languages: ${{ matrix.language }}
+          queries: +security-and-quality
+
+      - name: Autobuild
+        uses: github/codeql-action/autobuild@v2
+        if: ${{ matrix.language == 'python' }}
+
+      - name: Build cpp
+        if: ${{ matrix.language == 'cpp' }}
+        run: |
+          cd build
+          cmake --build . --config Debug
+
+      - name: Perform CodeQL Analysis
+        uses: github/codeql-action/analyze@v2
+        with:
+          category: "/language:${{ matrix.language }}"