jungle: support replaying CAN messages from an SD card

[adeebshihadeh]

panda jungle v2 has an SD card slot. The goal is to use that SD card to replay CAN messages from an openpilot route instead of having to run can_replay.py.

The on-disk format doesn't matter; we just need an easy script to "provision" the SD card.

[WilliamBonilla62]

Could you provide the schematics of the Panda jungle v2 since we might have to play in the low-level firmware to complete this task?