Investigate gRPC possibilities

[jefim]

At least sending those calls

[MatteoDelOmbra]

I think we won't be able to implement those. gRPC requires a .proto file that has a definition of a structure of a call. this file is used during build to generate methods and types needed to make a call. I've tried to somehow load a file during execution and build it dynamically or add prebuilded file but with no success. The only option I see is to create a task that have already defined .proto file for specific gRPC server, but it think would be useless for customer - every user will have different server with different methods