HKG: Elantra 2024-25 Port

[royjr]

[!NOTE] This port supports the following vehicles:

• Hyundai Elantra 2024-25
• Hyundai Elantra Hybrid 2024-25
• Hyundai i30 Hybrid 2024

CHECKLIST

• [x] harness: Hyundai K
• [x] architecture: CAN
• [x] route

[1okko]

The 2024 Hyundai Elantra CAN1 (RADAR) in the Chinese market is a can fd

[royjr]

Make sure to include this change as a flag openpilot can set, and add safety tests.

[royjr]

Not sure how to handle the message size change. Was it always supposed to be 8?

[royjr]

2022 Elantra confirms the current 4 byte size, so we need a new dbc + flags?

[github-actions[bot]]

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[royjr]

bump

[0xDeadcell]

bump