[FEATURE] Support GRPC Batch Ingestion

[patelsmit32123]

Is your feature request related to a problem?

Since the support for grpc is added in opensearch 3.0, we should support same for os-hadoop based on some configuration for users to choose between http vs grpc

[patelsmit32123]

I would like to take this up if planned for implementation

[Xtansia]

@patelsmit32123 It'd be warmly welcomed if you did wish to start working on this, thank you!

[lawofcycles]

Hi @patelsmit32123, are you still working on this issue? If not, I would like to take it on.