gRPC-Web support

[nalkhovikleverx]

Hello and thank you for amazing tool! I use it a lot and very satisfied 🙂

From time to time I use grpc-web requests done by this package: https://github.com/grpc/grpc-web

And here is the example how to setup a gRPC-Web server with a client: https://grpc.io/docs/platforms/web/basics/

I miss the functionality on httpyac to send gRPC-Web requests directly from the tool. Is it planned to be integrated? Is possible implementation would be hard to implement?

Thanks in advance!