Be able to host a gRPC server in a mobile app

[nextfool]

In Xamarin.Forms, we can host a gRPC server with the old (deprecated) gRPC.Core library.
But now, as they said that "The future of gRPC in C# belongs to grpc-dotnet", and the new "grpc-dotnet" is built on top of asp.net core framework, which does not support .net MAUI.
This means that we will NOT be able to host a gRPC server in .net MAUI apps, unless something is done in either asp.net core, .net maui or grpc-dotnet.

Bellow are two related issues:
grpc/grpc-dotnet#1571
dotnet/aspnetcore#35077 (comment)