feat: add RPCConfig

[varun-doshi]

fix #1118

[clabby]

Can you please add docs to the module, struct, struct fields, and the http_endpoint function?

We've turned off doclints for now, but will require them soon.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 92.5%. Comparing base (39ccb1f) to head (3886e89).
Report is 2 commits behind head on main.

✅ All tests successful. No failed tests found.

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