handling of arcs as parts of polygons in pad shapes in KLC's `check_footprint.py` script
This MR fixes a crash in case a custom pad shape's polygon contains arcs.
This issue was detected in MR kicad-footprints!3084 (merged):
Connector_Coaxial.pretty/WR-MMCX_Wuerth_66012102111404_Vertical.kicad_mod