[BUG] Support global params in GRPC server

[karenyrx]

Describe the bug

Global parameters are currently unsupported in the GRPC server.

These global parameter fields exist in the protobufs (e.g. Bulk, Search), but their functionality is a no-op, as they are not read in the transport-grpc module.

Related component

Other

To Reproduce

Submit a GRPC query with these fields populated. Results will be the same no matter what values are provided for these fields.

Expected behavior

Responses may be different depending on the value of the fields provided.

Additional Details

Additional context

As a general problem to consider: how may we be able to detect unimplemented protobuf fields on the server side?

[karenyrx]

Feel free to assign this issue to me for now (unless anyone else is more interested in working on it)

[andrross]

Catch All Triage - 1 2

[fdesu]

I'm currently taking a look into this issue

[karenyrx]

Thanks @fdesu !