Token errors should specify CurrencyId

[gregdhill]

Some of the errors in orml_tokens::Error could specify the CurrencyId to narrow the source of error. For example, BalanceTooLow could be a tuple variant BalanceTooLow(T::CurrencyId).

[xlc]

Additional error payload can only be up to 4 bytes and we can't restrict the max size of CurrencyId

paritytech/substrate#10242