pcb enclosure library - 3

This thing is an update of thing https://www.thingiverse.com/thing:2781023

It include changes I've made while designing 4duino enclosure ( https://www.thingiverse.com/thing:2808559 ) for thing 4duino cardiac coherence ( https://www.thingiverse.com/thing:2808593 )

I mainly added a few lines to handle the height of the box and components.