Add option to reduce range when towing

🚧 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/request-a-feature/add-option-to-reduce-range-when-towing/
———————————————————————————
It would be great if there was an option to input a reduction in expected range when towing. Many ev models now can tow, but range is half-ish.