Create CI action (#21)

.github/workflows/ci.yml

@@ -0,0 +1,43 @@
+# This workflow will build a .NET project
+# For more information see: https://docs.github.com/en/actions/automating-builds-and-tests/building-and-testing-net
+
+name: .NET
+
+on:
+  push:
+    branches: [ "main" ]
+  pull_request:
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: actions/checkout@v3
+
+    - name: Setup .NET 5.0
+      uses: actions/setup-dotnet@v3
+      with:
+        dotnet-version: 5.0.x
+
+    - name: Setup .NET 6.0
+      uses: actions/setup-dotnet@v3
+      with:
+        dotnet-version: 6.0.x
+
+    - name: Setup .NET 7.0
+      uses: actions/setup-dotnet@v3
+      with:
+        dotnet-version: 7.0.x
+
+    - name: Restore dependencies
+      run: dotnet restore
+      working-directory: src/TimeIt
+
+    - name: Build
+      run: dotnet build --no-restore
+      working-directory: src/TimeIt
+
+    - name: Run timeit sample
+      run: ./TimeIt config-example.json
+      working-directory: src/TimeIt/bin/Debug/net7.0