Add charging KW limit

🚧 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-charging-kw-limit/
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Please add the option of limiting the charging speed (KW) to the planner. My 2014 Tesla P85D (as an example) peaks at 65 kw charging due to Tesla nerfing the speeds possible. So an option to set "max charging rate" or something to that effect might make the planning more accurate?