Documentation - Simulink screenshots

[DylanEij]

Is your feature request related to a problem? Please describe.
Readthedocs does not have access to the matlab engine, making it impossible to create screenshots of the simulink models.

Describe the solution you'd like
A docker with python and access to the matlab engine with simulink.

Describe alternatives you've considered
Run sphynx offline with the right packages to create the images and then readthedocs uses thos images instead.
This required an edit to the package available by pip, so this edited package needs to be available as a whl file by readthedocs.