Fix Grpc.Core.Api assembly version

src/csharp/Grpc.Core.Api/Grpc.Core.Api.csproj

@@ -22,6 +22,10 @@
 
   <Import Project="..\Grpc.Core\SourceLink.csproj.include" />
 
+  <ItemGroup>
+    <Compile Include="..\Grpc.Core\Version.cs" />
+  </ItemGroup>
+
   <ItemGroup>
     <PackageReference Include="System.Interactive.Async" Version="3.2.0" />
   </ItemGroup>

src/csharp/Grpc.Core/ForwardedTypes.cs

@@ -51,5 +51,6 @@ using Grpc.Core.Utils;
 [assembly:TypeForwardedToAttribute(typeof(ServiceBinderBase))]
 [assembly:TypeForwardedToAttribute(typeof(Status))]
 [assembly:TypeForwardedToAttribute(typeof(StatusCode))]
+[assembly:TypeForwardedToAttribute(typeof(VersionInfo))]
 [assembly:TypeForwardedToAttribute(typeof(WriteOptions))]
 [assembly:TypeForwardedToAttribute(typeof(WriteFlags))]