Add missing test runner

Author: inputfalken

tests/DynamoDBGenerator.SourceGenerator.Tests/DynamoDBGenerator.SourceGenerator.Tests.csproj

@@ -14,6 +14,10 @@
         <PackageReference Include="FluentAssertions" Version="7.0.0"/>
         <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.12.0" />
         <PackageReference Include="xunit" Version="2.9.2"/>
+        <PackageReference Include="xunit.runner.visualstudio" Version="2.8.2">
+          <PrivateAssets>all</PrivateAssets>
+          <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
+        </PackageReference>
     </ItemGroup>
 
     <ItemGroup>