FCA Giorgio: Alfa Romeo Stelvio

[jyoung8607]

Resuming work on commaai/openpilot#32898.

Users have driven an earlier version of this code on both Stelvio and Giulia and seem to be loving it. The lateral acceleration torque controller feed-forward is an excellent match for these cars. There are some obstacles we need to solve for official support; it's possible we'll have to ship it in dashcam mode.

Checklist

• test route added to routes.py
• route with openpilot: TBD
• route with stock system: TBD
• car harness used (if comma doesn't sell it, put N/A): VW_A

To-Do

• FCA Giorgio: CAN database #1250
• FCA Giorgio: Alfa Romeo Stelvio panda#1980
• UDS/VIN fingerprinting
• Locate gearshift position signal
• Locate driver gas signal
• Locate cruise button signals
• Locate driver seatbelt signal
• Locate BSM signals
• Verify turn signal correctly processed (comfort vs latched, blink vs continuous)
• Plot out and test known HUD messaging (lane lines, etc)
• Fix reported issue with lane changes to the right