Rename namedpipeMetadataImperter assembly (#5314)

Author: imcarolwang

src/dotnet-svcutil/lib/NamedPipeMetadataImporter/IMetadataExchange.cs renamed to src/dotnet-svcutil/lib/Microsoft.Svcutil.NamedPipeMetadataImporter/IMetadataExchange.cs

@@ -1,7 +1,9 @@
 <Project Sdk="Microsoft.NET.Sdk">
 	<PropertyGroup>
 		<TargetFrameworks>net6.0;net462</TargetFrameworks>
-    <LangVersion>latest</LangVersion> 
+    <RootNamespace>Microsoft.Tools.ServiceModel.Svcutil</RootNamespace>
+    <AssemblyName>$(MSBuildProjectName)</AssemblyName>
+    <LangVersion>latest</LangVersion>
 	</PropertyGroup>
 	<ItemGroup>
 		<PackageReference Include="System.ServiceModel.NetNamedPipe" Version="6.0.*" Condition="'$(TargetFramework)' == 'net6.0'">

src/dotnet-svcutil/lib/NamedPipeMetadataImporter/NamedPipeMetadataImporter.csproj renamed to src/dotnet-svcutil/lib/Microsoft.Svcutil.NamedPipeMetadataImporter/Microsoft.Svcutil.NamedPipeMetadataImporter.csproj

@@ -111,7 +111,7 @@ public async Task ImportMetadataAsync(Action<WsdlImporter> onWsdlImporterCreated
                 }
 
                 string toolPath = Path.GetDirectoryName(Assembly.GetExecutingAssembly().Location);
-                Assembly assembly = Assembly.LoadFrom($"{toolPath}/internalAssets/{tfn}/NamedPipeMetadataImporter.dll");
+                Assembly assembly = Assembly.LoadFrom($"{toolPath}/internalAssets/{tfn}/Microsoft.Svcutil.NamedPipeMetadataImporter.dll");
 
                 Type type = assembly.GetType("Microsoft.Tools.ServiceModel.Svcutil.NamedPipeMetadataImporter");
                 if (type != null)