Create codeql.yml to enable CodeQL Analysis

.github/codeql/codeql-config.yml

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+name: "CodeQL config"
+paths-ignore:
+  - external
+  - QuoteVerification/QuoteVerificationService
+  - QuoteVerification/QVL
+  - QuoteVerification/sgxssl

.github/workflows/codeql.yml

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+name: "CodeQL"
+
+on:
+  push:
+    branches: [ "main" ]
+  pull_request:
+    branches: [ "main" ]
+  schedule:
+    - cron: '35 2 * * 0'
+
+jobs:
+  analyze:
+    name: Analyze (${{ matrix.language }})
+    runs-on: ubuntu-22.04
+    timeout-minutes: ${{ (matrix.language == 'swift' && 120) || 360 }}
+    permissions:
+      # required for all workflows
+      security-events: write
+
+    strategy:
+      fail-fast: false
+      matrix:
+        include:
+        - language: c-cpp
+          build-mode: manual
+        # CodeQL supports the following values keywords for 'language': 'c-cpp', 'csharp', 'go', 'java-kotlin', 'javascript-typescript', 'python', 'ruby', 'swift'
+    steps:
+    - name: Checkout repository
+      uses: actions/checkout@v4
+      with:
+        submodules: recursive
+
+    # Initializes the CodeQL tools for scanning.
+    - name: Initialize CodeQL
+      uses: github/codeql-action/init@v3
+      with:
+        languages: ${{ matrix.language }}
+        build-mode: ${{ matrix.build-mode }}
+        config-file: ./.github/codeql/codeql-config.yml
+        # If you wish to specify custom queries, you can do so here or in a config file.
+        # By default, queries listed here will override any specified in a config file.
+        # Prefix the list here with "+" to use these queries and those in the config file.
+
+    # If the analyze step fails for one of the languages you are analyzing with
+    # "We were unable to automatically build your code", modify the matrix above
+    # to set the build mode to "manual" for that language. Then modify this step
+    # to build your code.
+    # ℹ️ Command-line programs to run using the OS shell.
+    # 📚 See https://docs.github.com/en/actions/using-workflows/workflow-syntax-for-github-actions#jobsjob_idstepsrun
+    - name: Build
+      if: matrix.build-mode == 'manual'
+      run: |
+        sudo apt-get install libcurl4-openssl-dev libboost-dev libboost-system-dev libboost-thread-dev
+        QuoteGeneration/download_prebuilt.sh
+        wget -r -l1 -np -nd --accept 'sgx_linux_x64_sdk_*.bin' https://download.01.org/intel-sgx/latest/linux-latest/distro/ubuntu22.04-server/
+        chmod +x ./sgx_linux_x64_sdk_*.bin
+        ./sgx_linux_x64_sdk_*.bin <<< "yes"
+        source ./sgxsdk/environment; make all
+
+    - name: Perform CodeQL Analysis
+      uses: github/codeql-action/analyze@v3
+      with:
+        category: "/language:${{matrix.language}}"
+