feat - easy access to the last message sent

[SGudbrandsson]

From Derek: A feature I would like to see is some sort of easy access to the last message I sent. Sometimes you have to scroll up quite a while to see your last message

[SGudbrandsson]

Derek, is this a visual thing to remember what you sent, or something else?

Would clicking the up button in the text field make sense here?
This would be similar to how the CLI works