feat: support send and recv msg size for gRPC

[alexanderbez]

Description

Update the gRPC configuration to support providing user-provided receive and send max message sizes.

Note, this should be upstreamed to the Cosmos SDK core repo.

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[alexanderbez]

I have no idea what's up with test-rosetta. I run it locally, and there are absolutely zero logs. There is also no current team maintaining it. I suggest we just remove it all together. Thoughts @ValarDragon?