ci: add codesql workflow

Author: onedr0p

.github/workflows/codeql.yaml

@@ -0,0 +1,42 @@
+---
+# yaml-language-server: $schema=https://json.schemastore.org/github-workflow.json
+name: CodeQL
+
+on:
+  pull_request:
+  push:
+    branches: ["main"]
+  schedule:
+    - cron: "30 6 * * *"
+  workflow_dispatch:
+
+permissions:
+  contents: read
+
+jobs:
+  analyze:
+    name: Analyze (${{ matrix.language }})
+    runs-on: ubuntu-latest
+    permissions:
+      security-events: write
+      packages: read
+    strategy:
+      fail-fast: false
+      matrix:
+        include:
+          - language: actions
+            build-mode: none
+    steps:
+      - name: Checkout
+        uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+
+      - name: Initialize CodeQL
+        uses: github/codeql-action/init@28deaeda66b76a05916b6923827895f2b14ab387 # v3.28.16
+        with:
+          languages: ${{ matrix.language }}
+          build-mode: ${{ matrix.build-mode }}
+
+      - name: Perform CodeQL Analysis
+        uses: github/codeql-action/analyze@28deaeda66b76a05916b6923827895f2b14ab387 # v3.28.16
+        with:
+          category: "/language:${{matrix.language}}"