add codeql

Author: baileympearson

.github/workflows/codeql.yml

@@ -0,0 +1,54 @@
+name: "CodeQL"
+
+on:
+  push:
+    branches: ["main"]
+  pull_request:
+    branches: ["main"]
+
+jobs:
+  analyze:
+    name: Analyze (${{ matrix.language }})
+    runs-on: "ubuntu-latest"
+    timeout-minutes: 360
+    permissions:
+      # required for all workflows
+      security-events: write
+
+      # required to fetch internal or private CodeQL packs
+      packages: read
+
+      # only required for workflows in private repositories
+      actions: read
+      contents: read
+
+    strategy:
+      fail-fast: false
+      matrix:
+        include:
+          - language: "c-cpp"
+            build-mode: "manual"
+            sourceDirectory: "./addon"
+          - language: "javascript-typescript"
+            build-mode: "none"
+            sourceDirectory: "./lib"
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+
+      # Initializes the CodeQL tools for scanning.
+      - name: Initialize CodeQL
+        uses: github/codeql-action/init@v3
+        with:
+          languages: ${{ matrix.language }}
+          build-mode: ${{ matrix.build-mode }}
+          source-root: ${{ matrix.sourceDirectory }}
+
+      - if: matrix.build-mode == 'manual'
+        shell: bash
+        run: npm i --ignore-scripts && npm run install-zstd && npm run compile
+
+      - name: Perform CodeQL Analysis
+        uses: github/codeql-action/analyze@v3
+        with:
+          category: "/language:${{matrix.language}}"