OpenTAP Nuget 32 bit project support

It seems currently that the OpenTAP nuget does not support debugging a 32 bit assembly.

To reproduce:

• Create a new project: tap sdk new project testproject
• Modify the csproj <OpenTapPackageReference Include="Developer's System"/>
• Add this Element: <PlatformTarget>x86</PlatformTarget>
• dotnet build
• open Editor.exe
• notice that the testproject dll cannot be loaded.

Forum thread: https://forum.opentap.io/t/how-to-setup-an-opentap-plugin-project-to-create-a-32-bit-plugin/188/6