Add install check for components sorters

[chrishalcrow]

Adds groups for the internal sorters.
Adds a package installation check when you run LUPIN, spykingcircus2 and tridesclous2, explaining how to install using the new groups.

Example error:

Exception: The sorter tridesclous2 is not installed. Please install it with:
        pip install 'spikeinterface[tridesclous2]'
Or, if you have cloned SpikeInterface locally, using:
        pip install '.[tridesclous2]'

[alejoe91]

Seems like lupin tests in internal sorters are failing due to installation

[chrishalcrow]

I missed the sorters module in #4573 - d'oh.

[h-mayorquin]

I think this is a good idea.