[lib] Add Coinbase Wallet support

Summary:
This addresses ENG-2985.

The patchfile change is necessary to get Rainbowkit to pass this config to Wagmi.

I discovered it when searching the GitHub issues for coinbase-wallet-sdk: here and here. I also found a Farcaster discussion about it here.

Depends on D11491

Test Plan: Testing on web running locally, and on native device via landing. Second part was tough... had to test patches on production because I couldn't get my local landing to render on my physical device

Reviewers: atul, ginsu

Reviewed By: ginsu

Subscribers: tomek

Differential Revision: https://phab.comm.dev/D11492