Define [IVT] in .props file, don't hardcode public key

Author: Sergio0694

src/CommunityToolkit.HighPerformance/CommunityToolkit.HighPerformance.csproj

@@ -36,7 +36,7 @@
         <PackageReference Include="System.Runtime.CompilerServices.Unsafe" Version="6.0.0" />
       </ItemGroup>
 
-      <!-- On .NET Standard 2.0, the unit test project also needs access to internals-->
+      <!-- On .NET Standard 2.0, the unit test project also needs access to internals -->
       <ItemGroup>
         <InternalsVisibleTo Include="CommunityToolkit.HighPerformance.UnitTests, PublicKey=$(AssemblySignPublicKey)" />
       </ItemGroup>

src/CommunityToolkit.Mvvm.SourceGenerators/CommunityToolkit.Mvvm.SourceGenerators.projitems

@@ -65,7 +65,6 @@
     <Compile Include="$(MSBuildThisFileDirectory)Input\Models\CommandInfo.cs" />
     <Compile Include="$(MSBuildThisFileDirectory)Input\RelayCommandGenerator.cs" />
     <Compile Include="$(MSBuildThisFileDirectory)Input\RelayCommandGenerator.Execute.cs" />
-    <Compile Include="$(MSBuildThisFileDirectory)InternalsVisibleTo.cs" />
     <Compile Include="$(MSBuildThisFileDirectory)Messaging\IMessengerRegisterAllGenerator.cs" />
     <Compile Include="$(MSBuildThisFileDirectory)Messaging\IMessengerRegisterAllGenerator.Execute.cs" />
     <Compile Include="$(MSBuildThisFileDirectory)Messaging\Models\RecipientInfo.cs" />

src/CommunityToolkit.Mvvm.SourceGenerators/CommunityToolkit.Mvvm.SourceGenerators.props

@@ -35,4 +35,9 @@
     <PackageReference Include="Microsoft.CodeAnalysis.CSharp" Version="$(MvvmToolkitSourceGeneratorRoslynVersion)" PrivateAssets="all" Pack="false" />
   </ItemGroup>
 
+  <!-- Give access to the code fixers project for the exported diagnostic ids and properties -->
+  <ItemGroup>
+    <InternalsVisibleTo Include="CommunityToolkit.Mvvm.Fixers, PublicKey=$(AssemblySignPublicKey)" />
+  </ItemGroup>
+
 </Project>