Move << and >> overloads from Min_circle_2_impl.h to Min_circle_2.h

[SharonIV0x86]

Summary of Changes

The current implementation of the Min_circle_2 class in Min_circle_2.h, located in the Bounding_volumes/include directory, defines the IO overloads << and >> in a separate file, Min_circle_2_impl.h. This file is included in the main Min_circle_2.h file here.

Since the << and >> overloads are only used within the context of the Min_circle_2.h file and are not referenced elsewhere in the codebase, these definitions can be moved directly into Min_circle_2.h. Consolidating the overloads into the main file improves code organization, making the codebase more streamlined and easier to maintain.

Additionally, as noted in the documentation for the Min_circle_2 class here, the Min_circle_2 class is considered almost obsolete, further supporting the simplification of its current implementation.

A few more components of Bounding_volumes package can be modified the same way:

• Min_ellipse_2
• Min_sphere_d
• Min_sphere_d_impl.h
• Min_sphere_of_sphere_d

However, this PR only focuses on Min_circle_2

Release Management

• Affected package(s): Bounding_volumes

[SharonIV0x86]

@sloriot i may have made a mistake while opening this PR, the changes of my previous PR are also included in this PR as well. So, how should i proceed? close this PR and reopen a new one with the current changes only?

[sloriot]

Something like that should work:

git checkout refact/Min_circle_2
git reset --hard a509669
git push -f

[SharonIV0x86]

Something like that should work:

git checkout refact/Min_circle_2
git reset --hard a509669
git push -f

doesn't seem to work, i'll open a new PR in sometime, sorry for this.