Select max charger power (was Wrong charge rate for Nissan Leaf+)

🚧 THIS IS A TICKET MIGRATED FROM UPVOTY. The original ticket and comments will be available for a limited time over at:
https://abrp.upvoty.com/b/add-a-vehicle/wrong-charge-rate-for-nissan-leaf-/
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Nissan initially advertised the max charge rate for the 62kwh Leaf as 100kw, but not true. Real max is 50kwh, like other Leafs.
Suggest you allow users to override charging rate