QoL wrapper for vec of wallets

[MujkicA]

In a recent PR, @iqdecay suggested we implement some methods on Vec<Wallets> to provide eg the vec of their addresses, the vec of their balances etc.

[MujkicA]

IMO this seems like a good QoL improvement. The only downside I can think of is that the user has to be introduced to yet another abstraction before they can finally work with wallets.

[iqdecay]

Is it really a another abstraction layer though? In the sense that it would be transparent for the user from a usage perspective:
wallets.get_balances vs wallet.get_balance. To be clear I'm suggesting this as an addition, not a replacement for current existing methods. Obviously the user wouldn't have to use a single-element Vec of a wallet to interact with it.