Create a flag to consider of not the mesh form the model

[EveCharbie]

biorbd.Model('path.biomod', with_mesh=True)
By defaut we would call bioviz with True and bioptim with False.
This would help reduce RAM consumption during OCP computation without having to change manually the model.

[pariterre]

Does this actually change the RAM?

[EveCharbie]

Yes, we tested it with lsechoir