Implement a function compare_length_of_two_segments

[Rylynnn]

• [x] Implement a function compara_length_of two_segments(p1, p2, p3, p4).
• [x] Compute lehgth of p1, p2 and the length of p3, p4 using Euclidean distance and return the result of comparion.
• [x] Use 2D geographic points.

[Rylynnn]

• [x] Implement and test also two other methods instead of pythagoras.
• haversine
• local earth approximation as a flat. should be implemented from here, and used in the special case when p1=p3 that is when the two segments have a common endpoint.
• [x] Create several examples to test for this case and observe where inconsistencies appear.
• [x] Keep the cartesian version
• [x] Fix the problems with indentation in your file
• Fix the problem with add the following command in ~/.vimrc:

  set expandtab

  then command

  :retab!

• [x] Use comments in code, keep them short but descriptive

[Rylynnn]

Implementation: compare_length_of_two_segments.cpp in geometry/example of branch /feature/filter.