Fix codegen paths

build/MicroCom.targets

@@ -2,7 +2,7 @@
 
   <!-- Ensure that code generator is actually built -->
   <ItemGroup>
-    <ProjectReference Include="..\tools\MicroComGenerator\MicroComGenerator.csproj">
+    <ProjectReference Include="$(MSBuildThisFileDirectory)\..\src\tools\MicroComGenerator\MicroComGenerator.csproj">
       <ReferenceOutputAssembly>false</ReferenceOutputAssembly>
       <ExcludeAssets>all</ExcludeAssets>
       <SkipGetTargetFrameworkProperties>true</SkipGetTargetFrameworkProperties>
@@ -12,7 +12,7 @@
   <Target Name="GenerateAvaloniaNativeComInterop"
           BeforeTargets="CoreCompile"
           DependsOnTargets="ResolveReferences"
-          Inputs="@(AvnComIdl);$(MSBuildThisFileDirectory)/../tools/MicroComGenerator/**/*.cs"
+          Inputs="@(AvnComIdl);$(MSBuildThisFileDirectory)../src/tools/MicroComGenerator/**/*.cs"
           Outputs="%(AvnComIdl.OutputFile)">
     <Message Importance="high" Text="Generating file %(AvnComIdl.OutputFile) from @(AvnComIdl)" />
     <Exec Command="dotnet $(MSBuildThisFileDirectory)../src/tools/MicroComGenerator/bin/$(Configuration)/netcoreapp3.1/MicroComGenerator.dll -i @(AvnComIdl) --cs %(AvnComIdl.OutputFile)" LogStandardErrorAsError="true" />