chore: minimal code-coverage support (#214)

Author: Meir017

.github/workflows/ci.yml

@@ -20,5 +20,5 @@ jobs:
         uses: actions/setup-dotnet@v3
         with:
           dotnet-version: 6.0.x
-      - run: dotnet test --configuration Release --filter 'TestCategory=Completed'
+      - run: dotnet test --configuration Release --filter 'TestCategory=Completed' /p:CollectCoverage=true /p:CoverletOutputFormat=cobertura
       - run: dotnet pack src/FluentAssertions.Analyzers/FluentAssertions.Analyzers.csproj

src/FluentAssertions.Analyzers.Tests/FluentAssertions.Analyzers.Tests.csproj

@@ -7,6 +7,10 @@
   </PropertyGroup>
 
   <ItemGroup>
+    <PackageReference Include="coverlet.msbuild" Version="6.0.0">
+      <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
+      <PrivateAssets>all</PrivateAssets>
+    </PackageReference>
     <PackageReference Include="FluentAssertions" Version="6.1.0" />
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="16.3.0" />
     <PackageReference Include="MSTest.TestAdapter" Version="2.0.0" />