Gradiented Modifiers

[silvernull]

The idea is to have a setting that enables changing the values in the modifier towards the edges of the modifier object, or layer by layer in a height range modifier.

So, for example I could have thicker walls towards the base of a print where it overhangs,

instead of using ensure vertical wall shell thickness which would affect the overhangs at the top also.
At the same time an Arachne ensure vertical wall shell thickness implementation, maybe separate from arachne since it has some issues, that changes the line width dynamically instead of increasing the amount of perimeters would be cool.