feat(cast): switch chain before sending tx if current chain is different

[0xdapper]

If user specifies a chain ID, with this change it will check if the current chain id returned by the RPC is the same as user provided chain id. If not will attempt to switch it with wallet_switchEthereumChain.

Motivation

This change particularly allows me to use https://frame.sh/ to sign transactions using the unlocked signers on local node method. Ex: https://gist.github.com/0xdapper/7461f2b0f0100b6508938cfff4db2dad

Solution

Switch the chain if necessary.

[Evalir]

I wanna test ideally test this out before we merge, but it looks OK to me from the surface, ty!

I think maybe a warning that foundry is doing this for you would be good though

We'll also need nightly lint & clippy to make CI happy

[Evalir]

lgtm!