Add code for intermediate stop generation and location and other modes for Paid Rideshare tours

[mabcal]

Right now, there is no difference for Paid Rideshare tours in terms of the frequency of intermediate stops and the location of those stops. Also nothing about the use of other modes besides PaidRideshare on Paid Rideshare tours.

We will analyze recent SANDAG HTS data and make educated guesses on parameters when adding these aspects of TNC behavior to the models.