[Feature request] Floating keyboard

[DuilioPerez]

It could be a usefull addittion the option to have unexpected keyboard as a floating keyboard. It can be helpfull for apps like Termux where changing size of usable screen can have effects on GUI:

But a floating keyboard keeps the same usable screen's size:

[Spike-from-NH]

This has been requested many times, often citing termux and gboard. Search the issues to read previous requests for this feature.