Add unit test for EuclideanSectionDistance

[anilbey]

The EuclideanSectionDistance is an old code that remains untested.

Todo:

• Add guard condition to ensure the value of dimensions parameter can be one of the following: x,y,z,xy,xz,yz, xyz and nothing else! https://github.com/BlueBrain/BlueCelluLab/blob/e6d414eb509c134a75726d5662914a59e2faba44/bluecellulab/cell/section_distance.py#L61C30
• Add argument and return type annotations to all functions in the module
• Cover any other edge-cases that can arise in the computation
• Add the missing unit tests
• Remove deprecated Cell::euclid_section_distance

  BlueCelluLab/bluecellulab/cell/core.py

  Line 838 in e6d414e

  def euclid_section_distance(

[anilbey]

A test is actually present in test_core.py