Re-design the keyboard module

[DvirB10]

Hi! After adding the support of ctrl-L keyboard shortcut, I've noticed the keyboard strokes are managed in a one big if...else, and that some of the keystrokes being handled are the same for both magictype and regulartype. ( Like ctrl-L :) )

I think it will be better to manage the keystrokes for both magictype and regulartype together, at least some of them to avoid code duplication. Also, both of them are getting the same parameters but text, which also cause a little bit of code duplication.

Any suggestions or disagreements will be happily received.
I hope it's ok 😟 It's my first time trying to help an open-source project :)

Thanks!