Suggestion to add more functionalities

[Abysslabs]

Hello cguerrero,

First of all thanks for the great work you have done on this project. Second sorry for job lost, pandemic situation not easy for nobody, here in Portugal a lot of people is loosing jobs as well :(

I have a suggestion to give that I think is easy to implement. ("I THINK" I'm a noob regarding software) what about adding 7 physicals buttons, to move the spindle, like arrows to move across (X,Y and Z) and switch ON/OFF spindler. also on display menu have the customization about step in mm and speed feed rate for the buttons.

With this change we were able to manual perform simple items/tasks.

Thanks again all the best.