JSObjectReference API review

[pranavkm]

• Create interfaces IJSObjectReference and IJSInProcessObjectReference
• Make JSObjectReference and JSInProcessObjectReference internal
• Update IJSObjectReference and IJSInProcessObjectReference to have the same set of extension methods as IJSRuntime and IJSInProcessRuntime.
• Remove protected static JSCallResultType ResultTypeFromGeneric() and make it internal or use shared code
• Consider annotating WebAssembly specific JSRuntime types with SupportedOSPlatform attribute

[mkArtakMSFT]

@MackinnonBuck shoudl this be closed now?

[MackinnonBuck]

Yes, closing.