Make RPC_TIMEOUT configurable

[sealer3]

In lib-sourcify, RPC_TIMEOUT is currently set to 5 secs when verifying contracts at

https://github.com/ethereum/sourcify/blob/9dd1c7c5a63bcb85465f2534260f0d24cab2da0e/packages/lib-sourcify/src/lib/verification.ts#LL34C1-L34C26

Unfortunately I sometimes hit that timeout even though the RPC is still online and I know it will eventually process the request. The maximum timeout could be very long. So, I would like the timeout to be extended somehow, probably by making RPC_TIMEOUT configurable.

I would do it myself and make a PR, but first I wonder if there is a cleaner approach than adding an argument to every function that will call a get function (which uses an RPC server) or using an environment variable to set the timeout.

_{View in Huly HI-420}

[kuzdogan]

Just pushed the env var fix 09fe33e and it's live on production #1045.

It might make sense in the future to pass a config object or another way to pass these, as we want lib-sourcify to run in the browser. But for now this should solve the problem.

Thanks for the report, keep these coming! :) Also curious about your use case if you'd like to tell us about it. You can reach us out from the channels in the footer https://sourcify.dev

[sealer3]

Thank you for such a quick turnaround! Quite amazing. I will reach out eventually