Various winter improvements

[Mind-the-Cap]

• New classes Parameter and ParameterSet to better manage parameters of the model

Normally ensures compatibility with existing scripts, but I'm not merging, as it changes the way parameters are I want to have a discussion on that before merging!

• Improvements for quickstart
• Move old classes to a legacy folder
• New default parameters for modes and motives (to improve with future calibration)
• Add a class MultiSeedPopulationTrips to get results using multiple seeds while not complicating PopulationTrips too much
• Add WorkHomeFlows_fr class to compare with INSEE flows
• Use this INSEE data to create a SSI function (Sørensen similarity index)

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 70.42%. Comparing base (c8c3ac3) to head (cfd4891).

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #242   +/-   ##
=======================================
  Coverage   70.42%   70.42%           
=======================================
  Files          56       56           
  Lines        2424     2424           
=======================================
  Hits         1707     1707           
  Misses        717      717           

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