Support for Custom RPC

[0xshubhs]

Hey there, i was just using using this wallet as my development wallet and i cannot add my testnet rpc for sepolia ,

it would be very best if theres a support for custom RPC !!

[apoorvlathey]

Planned for next release! bankr api only supported those 4 networks atm so the wallet also restricted to that.
But now we have added MegaETH for PK and SP accounts, so we can expand onto that and make it custom chains