draft - Odyssey 21-25 support

[mvl-boston]

(marking as draft until satisfactory drive test)

Add support for 2021 to 2025 Honda Odyssey

• car fingerprint named 5G MMR. That is honda-speak for 5th generation mid-model refresh
• US Odysseys use imperial speed/cruise units on the canbus, Canadian Odysseys use metric. Rewrite the cruise unit to read the canbus flag, rather than be based on hardcoded fingerprint names, to automate support of this.
• Odyssey removes steering when under 70kph with radar on (eg: when longitudinal is off). Identified the canbus flag that identifies the steering lockout, and set a low speed warning when this occurs.
• regression on gas strength says that this model runs 1 m/s per 1000 gas units. Existing code has 1m/s per 800 units for Bosch. Unsure if this model is different (or other Bosch models are tuned wrong) so wrote logic that flips to 1000 units only for this fingerprint.

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