I would like to be able to switch between my default US English keyboard to an Arabic one, as I would like to learn some Arabic. I know that going to System Settings → Regional Settings → Translations and choosing
العربية as my default language will cause everything that can be translated to be translated to Arabic when I next log into KDE Plasma 5.
I also know that this causes the Plasma panel to be reversed (so that its Left→Right orientation to be switched to a Right→Left one). What I want is for nothing to be translated or reversed just for my keyboard to be temporarily switched to an Arabic one (but easily switchable back to my default US English one), so that I can type in Arabic.
If relevant (like if your answer involves installing extra software) I am using Arch Linux.