Refactor CodeQL workflow for improved clarity (#180)

* Refactor CodeQL workflow for improved clarity

* Lint

Author: ondfisk

.github/workflows/codeql.yml

@@ -0,0 +1,47 @@
+---
+name: CodeQL
+
+"on":
+  push:
+    branches:
+      - main
+  pull_request:
+    branches:
+      - main
+    paths-ignore:
+      - "**/*.md"
+
+permissions: {}
+
+jobs:
+  analyze:
+    name: Analyze (${{ matrix.language }})
+    runs-on: ubuntu-latest
+    permissions:
+      contents: read
+      security-events: write
+
+    strategy:
+      fail-fast: false
+      matrix:
+        language:
+          - actions
+          - csharp
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
+        with:
+          persist-credentials: false
+
+      - name: Initialize CodeQL
+        uses: github/codeql-action/init@fdbfb4d2750291e159f0156def62b853c2798ca2 # v4.31.5
+        with:
+          languages: ${{ matrix.language }}
+          build-mode: none
+          queries: security-extended
+
+      - name: Perform CodeQL Analysis
+        uses: github/codeql-action/analyze@fdbfb4d2750291e159f0156def62b853c2798ca2 # v4.31.5
+        with:
+          category: /language:${{matrix.language}}

.gitignore

@@ -395,4 +395,6 @@ FodyWeavers.xsd
 *.msp
 
 # JetBrains Rider
-*.sln.iml
+*.sln.iml
+
+.DS_Store