Handle motorcylces

[Nitnelav]

This PR adds a new mode in the list of choices : motorcycles. This is optional, for backward compatibility, and enabled using the --with-motorcycle command line option

The pipeline part is not finished yet but I wanted to open the PR early to get feedback early, so don't hesitate to comment on anything.

Some things to be aware of :

• This option relies on the motorcycles vehicles to exist in the vehicles.xml file and their Id to be like m_[person_id] (for exemple : 'm_100065', 'm_1000984', etc...)
• This option relies of the 'motorcycleAvailability' attribute to exist and be not 'none' in the population
• The utility is the same as the car mode for now, any work on computing/calibrating the utility functions that include motorcycles are welcome :)
• This option enables the SeepageQ qsim option, motorcycle is declared as a seepage mode