Group pip install

[GaelleLeroux]

Hi @allemangD !

I tried to do what you suggested with the pip_install for ASO and ALI. Jeanne will do the other one.
I group them and ask the user the permission to install/update their librairies in Slicer.
Did I undestood well what you suggested ? Do you think it's ok ?

Thank you for your help :)

[allemangD]

I wonder if it is possible to avoid creating check_lib_installed ... I assume this is in place to avoid requiring pip install --upgrade.

If that's the case, seems like it should be fine until proper constraints files are supported. I'll merge now.