Rationalize code sharing between the three code generation projects

- #8417
- just two files needed to be moved…

Author: dougbu

src/Microsoft.Extensions.ApiDescription.Client/DownloadFileCore.cs renamed to src/GetDocumentInsider/DownloadFileCore.cs

@@ -13,8 +13,6 @@
   </ItemGroup>
 
   <ItemGroup>
-    <Compile Include="../Microsoft.Extensions.ApiDescription.Client/DownloadFileCore.cs" />
-    <Compile Include="../Microsoft.Extensions.ApiDescription.Client/ILogWrapper.cs" />
     <PackageReference Include="Microsoft.AspNetCore.TestHost" Version="$(MicrosoftAspNetCoreTestHost20PackageVersion)" />
   </ItemGroup>
 </Project>

src/GetDocumentInsider/GetDocumentInsider.csproj

@@ -15,6 +15,8 @@
   </PropertyGroup>
 
   <ItemGroup>
+    <Compile Include="../GetDocumentInsider/DownloadFileCore.cs" />
+    <Compile Include="../GetDocumentInsider/ILogWrapper.cs" />
     <EmbeddedResource Include="ServiceProjectReferenceMetadata.targets" />
   </ItemGroup>