System.ComponentModel.DataAnnotations not found in .net standard 2.0, requires NuGet package

[dubnemo]

Encountering this on build with the forked version:
The type or namespace name 'DataAnnotations' does not exist in the namespace 'System.ComponentModel' (are you missing an assembly reference?) [/home/dubnemo/ShippedItemInstancePlugin/ShippedItemInstancePlugin/ShippedItemInstancePlugin.csproj]

There is a lot of frustration for lack of support in .net standard 2.0 / 2.1 as shown here:
dotnet/standard#450

/home/dubnemo/ShippedItemInstancePlugin/ShippedItemInstancePlugin/ShippedItemInstancePlugin.csproj : error NU1101: Unable to find package System.ComponentModel.DataAnnotations. No packages exist with this id in source(s): nuget.org [/home/dubnemo/ShippedItemInstancePlugin/ShippedItemInstancePlugin.sln]

Thoughts?

[dubnemo]

Currently:

  <ItemGroup>
    <PackageReference Include="AgGatewayADAPTFramework" Version="2.3.0" />
    <PackageReference Include="Newtonsoft.Json" Version="13.0.3" />
    <PackageReference Include="CoreCompat.System.ComponentModel.DataAnnotations" Version="4.2.3-r7" />
  </ItemGroup>

[dubnemo]

This is resolved, and will close on the V4 PR