Updates to allow for upgraded vehicle repository

[kylecarow]

TODO:

• introduce metadata String fields in FASTSim vehicle struct. the name field should probably stay for compatibility reasons and as a complement to the description field.
  • make: String
  • model: String
  • year: String
  • description: String
    • already covered by doc
  • drivetrain: String or put drivetrain at the vehicle level as an enum
    • this already exists under chassis.drive_type
• carve out or rewrite code that automatically generates f3 vehicles from f2 when testing
• move/remove all but critical vehicle models from:
  • fastsim-core/resources/vehicles
  • cal_and_val/*/f2-vehicles and cal_and_val/*/f3-vehicles
    • this should honestly be completely reorganized, probably into its own repo or fastsim-calibration
  • loose yaml files in fastsim-core/src/vehicles/fastsim-2*.yaml
  • update to have new metadata fields & full current compatibility as needed
  • move all to https://github.com/NatLabRockies/fastsim-vehicles in appropriate schema
• create convenience functions to search/list/load vehicles files from github vehicle repository, either online or a local copy
• depending on schema, FASTSim versioning between rust & python should be unified