Add Private EV Chargers to account

🚧 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-private-ev-chargers-to-account/
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It would be great to be able to add your own private chargers to your account so while planning it could use these to calculate routes. A business may have various chargers along a route where it could stop, or someone with a holiday house could enter the specs for their own charging rate so ABRP could work out how long to stop and charge there.