AST Fillet mod for Selecting Multiple Edges

[max-mrgrsk]

I need edges, lots of edges

This issue is part of the larger Fillet UI (#2606) project.

Problem

Currently, the Fillet UI only allows applying fillets to a single edge at a time.

Task

The goal of this issue is to extend that functionality to support the selection of multiple edges.
So you can apply fillets to several edges simultaneously.

Limitations

Currently the engine won't fillet any adjacent edges but otherwise is fine

[max-mrgrsk]

I will dig into both options:

1. Iterating Over addFillet (easy)
2. Modifying addFillet to Handle Multiple Selections (performant)