replace textinput with tui-textarea

[pm100]

This Pull Request fixes/closes #1662 plus others mentioned in that issue.

Completely redone since my first PR. All changes are confined to a single file thanks to a lot of assistance from @ryhsd

It changes the following:

• a complete rewrite of textinput.rs
• updates ratatui to 0.23

cargo deny check bans complains about

• itertools
• syn
• bitflags

Bitflags you know about syn is compile time only not sure what to do about itertools (you use 0.12 ratatui 0.23 uses 0.11)