Creation of a gRPC logger

[JPFrancoia]

Hi,

I made a gRPC logger (very similar to Talker's http logger, but for gRPC). It's here: https://github.com/JPFrancoia/talker_grpc_logger.

It's a bit bare bone for now, but it works for unary RPCs. Are you interested in getting it under Talker's umbrella?

[Frezyx]

Hello @JPFrancoia !
Great idea! I think it will be useful for all grpc client users on flutter

Can you open a PR with that package in main project repository ?

[JPFrancoia]

Here we are: #214 !