suggestion: transfer_from should take MessageInfo as an argument and work for native denominations

[0xekez]

Feel free to close this if you think this is a silly idea. I think we can implement transfer_from for native tokens easily enough by having it take a MessageInfo struct and then doing may_pay on it and returning no messages to be executed.

It's a bit of a break from the normal interface of this package, but I think semantically those are the same thing. For example:

let maybe_message = asset.transfer_from("ekez", info)?;

If ekez is the sender and the funds are included in the funds field it feels to me that the cw20 and native versions are the same here.