[Feature Request] wallet_addEthereumChain support

[xiao99xiao]

It's really important to be able to add new chains, either by using wallet_addEthereumChain or doing it manually, because there are new Layer 2 chains popping up all the time. Waiting for app updates to add each new chain would just be too slow.

[dmytrotkk]

+1 on this one

adding wallet_addEthereumChain and wallet_switchEthereumChain would be a deal-breaker

[grachyov]

hey @xiao99xiao @dmytrotkk, sorry for the delay.

i'll ship it right after completing the app store account migration.