Convex_hull_3: Add named parameter geom_traits

[afabri]

Summary of Changes

Instead of the traits class being a \tparam we make it a named parameter. This is a breaking change, but we have to fix an ambiguity detected by one compiler, as reported in Issue #8759

Todo

• [ ] documentation
• [x] changes
• [ ] do the same for other functions in the package

Release Management

• Affected package(s): Convex_hull_3
• Issue(s) solved (if any): fix #8759
• Feature/Small Feature (if any):
• Link to compiled documentation (obligatory for small feature) wrong link name to be changed
• License and copyright ownership:

[afabri]

/build:v0

[github-actions[bot]]

The documentation is built. It will be available, after a few minutes, here: https://cgal.github.io/8807/v0/Manual/index.html

[mglisse]

It seems that the obvious non-breaking solution would have been to constrain the overload that takes Traits, for instance by checking that it has a method collinear_3_object. Does that not work, or does the named parameter bring some other benefit?

[afabri]

@sloriot had proposed to also add a point property map