Add bigger text size setting options (to accomodate talbet users)

[gety9]

First of all thank you for amazing launcher, it's best minimal launcher by far. Simple, efficient, performant.

Could you please consider adding bigger text size option?
I am using olauncher on tablet (in portrait mode). And current's max 7 is too small. So i have to use OS's scaller settings, but it's a bit ugly cause on startup olauncher loads in default scale, and then there is flicker / rescaling to bigger size.

Currently we have 1 to 7, adding up to 9 would really help.