Add project files.

.github/workflows/codeql-analysis.yml

@@ -0,0 +1,49 @@
+name: "CodeQL"
+
+on:
+  push:
+    branches: ["master", "release-v*"]
+    paths:
+      - Nodify/**
+  pull_request:
+    branches: ["master", "release-v*"]
+  schedule:
+    - cron: "27 6 * * 2"
+
+jobs:
+  analyze:
+    name: Analyze (${{ matrix.language }})
+    runs-on: windows-latest
+    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: csharp
+            build-mode: none
+
+    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: ${{ matrix.build-mode }}
+
+      - name: Perform CodeQL Analysis
+        uses: github/codeql-action/analyze@v3
+        with:
+          category: "/language:${{matrix.language}}"