Generate partial classes for GRPC clients

[FDUdannychen]

I suggest bond_over_grpc generates partial classes for clients (like protocol buffers), which allows adding properties/methods/interfaces to the clients.

public (partial) class FooClient : global::Grpc.Core.ClientBase<FooClient>

Currently a workaround is inheritance

public class MyFooClient : FooClient

The name of MyFooClient and its namespace are quite tricky.

[chwarr]

No real concerns from me. If we start to generate a name that clashes with a name used in a partial class, that will cause the customer code to fail to compile, but there's no good way around that, and inheritance has a similar problem. (Types already work this way, but they're less likely to churn.)

Is this something you want to contribute?

• Update templates in Haskell
• Re-generated golden files
• Add unit test demonstrating & testing new behavior
• Update changelog

[chwarr]

Given that Bond-over-gRPC is being deprecated and removed, I'm going to close this as "Won't Fix"