dustinhartlyn

"""
Benchmark for FreeCAD PR: analytic line/line intersection in WireJoiner.

It builds a sketch of crossing straight lines (N horizontal + N vertical, so
N*N interior crossings) and times a recompute. That recompute runs the shape
build, which is where WireJoiner::splitEdges() does its work, and a grid of
crossing lines is the case that path is most expensive for.

How to run
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