add basic build with codeQL

.github/workflows/build-dotnet.yml

@@ -0,0 +1,31 @@
+name: Test Build Plugin
+
+on:
+  push:
+    branches: [ master ]
+    paths-ignore:
+      - '**/*.md'
+  pull_request:
+    branches: [ master ]
+    paths-ignore:
+      - '**/*.md'
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+
+      - name: Setup .NET Core
+        uses: actions/setup-dotnet@v1
+        with:
+          dotnet-version: 5.0.x
+
+      - name: Install dependencies
+        run: dotnet restore
+
+      - name: Build
+        run: dotnet build --configuration Release --no-restore
+
+      - name: Test
+        run: dotnet test --no-restore --verbosity normal

.github/workflows/codeql-analysis.yml

@@ -0,0 +1,44 @@
+name: Run CodeQL
+
+on:
+  push:
+    branches: [ master ]
+    paths-ignore:
+      - '**/*.md'
+  pull_request:
+    branches: [ master ]
+    paths-ignore:
+      - '**/*.md'
+  schedule:
+    - cron: '24 2 * * 4'
+
+jobs:
+  analyze:
+    name: Analyze
+    runs-on: ubuntu-latest
+
+    strategy:
+      fail-fast: false
+      matrix:
+        language: [ 'csharp' ]
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v2
+
+      - name: Setup .NET Core
+        uses: actions/setup-dotnet@v1
+        with:
+          dotnet-version: 5.0.x
+
+      - name: Initialize CodeQL
+        uses: github/codeql-action/init@v1
+        with:
+          languages: ${{ matrix.language }}
+          queries: +security-and-quality
+
+      - name: Autobuild
+        uses: github/codeql-action/autobuild@v1
+
+      - name: Perform CodeQL Analysis
+        uses: github/codeql-action/analyze@v1