Update 1.1 : Roof details generation + Right Panel

✅ Roof generation system ! Single mesh separated of the building mesh to keep the flexibility, with edge-margin and random seed °O°

✅ Lateral Right Panel (N) COnfiguration available, more convenient ^^

✅ Deletion of viewport optimisation, over-engineering, Keep It Simple, Stupid -_-

✅ Some code cleaning '='