Add gRPC-based API (?)

[acacio]

Hi,

I'm really impressed with this effort. I understand the main goal is to provide a transparent REDIS client API but would you consider an addition of a gRPC API in addition to the REDIS API? The benefits would be improved RPC semantics, speed and throughput (binary protocol).

Would you accept contributions to that effect? (maintaining the API cleanly separated, of course)

[namreg]

@acacio Hi, yes, of course! I will appreciate to that contribution. Thanks!