Polygon repair

[kenohori]

Summary of Changes

New Polygon_repair package, which is under development for GSoC 2023. It includes:

• The main Polygon_repair class with functions to repair Polygon_2, Polygon_with_holes_2 and Multipolygon_with_holes_2.
• Underlying classes to build a constrained triangulation with odd-even counting of constraints and to store the necessary repair info in every face.
• Validation functions for Polygon_2, Polygon_with_holes_2 and Multipolygon_with_holes_2 (not comprehensive)
  As well as some additions to the Polygon package:
• Concept and class to represent multipolygons with holes (Multipolygon_with_holes_2)
• Specialisation of CGAL::draw for multipolygons with holes.

Release Management

• Affected package(s): Polygon_repair, Polygon
• Feature: Polygon repair, accepted 5 March 2024
• Wiki page: link
• Built docs: Polygon_repair and Multipolygon_with_holes

[sloriot]

Successfully tested in 6.0-Ic-197

[lrineau]

@sloriot You added TODO , two weeks ago. Is there still something to do? The feature itself is accepted.

[github-actions]

This pull-request was previously marked with the label Tested, but has been modified with new commits. That label has been removed.

[sloriot]

I reduced the size, you can merge it now (git diff kenohori/gsoc2023-polygon_repair-kenohori..HEAD was empty)

[github-actions]

This pull-request was previously marked with the label Tested, but has been modified with new commits. That label has been removed.

[MaelRL]

Will there be a news entry?