Create mesher, that transforms shapes into meshs

[carlos-adir]

The objective is to define a mesher (yet to define which one) to allow meshing the shapes.

The user may be use like:

with Gmsh() as mesher:
    mesh = mesher(mysquare)

The with creates a context that allows initialize and close the mesher

[carlos-adir]

Requirement: add additional dependency which can be installed apart.

pip install shapepy
pip install shapepy[mesh]