Add CI workflow for build and test across multiple OS environments

Author: lextm

.github/workflows/ci.yml

@@ -0,0 +1,37 @@
+name: CI
+
+on:
+  push:
+    branches: [ master ]
+  pull_request:
+    branches: [ master ]
+
+jobs:
+  build-and-test:
+    runs-on: ${{ matrix.os }}
+    strategy:
+      matrix:
+        include:
+          - os: ubuntu-latest
+            solution: src/UnoPropertyGrid.slnx
+          - os: macos-latest
+            solution: src/UnoPropertyGrid.slnx
+          - os: windows-latest
+            solution: src/UnoPropertyGrid.slnx
+    steps:
+      - uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
+          submodules: recursive
+      - name: Setup .NET
+        uses: actions/setup-dotnet@v4
+        with:
+          dotnet-version: '10.x'
+      - name: Build (Windows)
+        if: runner.os == 'Windows'
+        run: ./build.windows.bat Release
+      - name: Build (macOS/Linux)
+        if: runner.os != 'Windows'
+        run: dotnet build -c Release ${{ matrix.solution }}
+      - name: Run unit tests
+        run: dotnet test --no-build -c Release --verbosity minimal ${{ matrix.solution }}