Scale bed icons & text depends on bed size

[yw4z]

Scales plate text / icons depends on bed size

BEFORE - buttons impossible to use if bed plate is big - Elegoo OrangeStorm

AFTER- icons always on same size

BEFORE - Icons doesnt fit small plates (105x105) Geetech M1

AFTER- icons scaled to fit

AFTER

CODE CHANGES

• Adding factor to all made code too cluttered. i cleaned up code for commit but i can revert that if you want to keep code same

• Matched code order / format on calc_vertex_for_number, calc_vertex_for_plate_name_edit_icon, calc_vertex_for_icons. but didnt used same format on generate_plate_name_texture . I can clean up it and can use same format on that too if approoved

• Aligned plate name to left of plate, previously there vas a extra spacing that doesnt scales