OFREP AOT Compatibility

[albilaga]

As the OpenFeature dotnet sdk itself is AOT Compatible, we should also make openfeature providers to be AOT Compatible as well
Right now when we are using Ofrep Providers we got error

 error IL2104: Assembly 'OpenFeature.Providers.Ofrep' produced trim warnings. For more information see https://aka.ms/il2104
error IL3053: Assembly 'OpenFeature.Providers.Ofrep' produced AOT analysis warnings.

[askpt]

Thanks for reporting this @albilaga. Each provider is responsible for enabling the AOT support. I will just target your request for OFREP (as you pointed out in the description).