Enables Rx extensions in web-assembly projects. Based on Uno.Rx.NET.
A reference to the Reactive.Wasm NuGet package should be added, and then it must be manually enabled, preferably in the entry point of your app, call the following (uncomment in multi-platform apps and change directive if necessary):
//#if __WASM__
PlatformEnlightenmentProvider.Current.EnableWasm();
//#endif