feat: estimate offstreet parking

[ticklepoke]

• allow swapping between public / private spots
• allow modifying the number of spots
• allow users to change the name of public garages
• figure out why the changes are not persisting
• PermanentEditCmd
• EditCmd

fulfills #175

[dabreegster]

Hi, just checking in -- did you hit any blockers I can help with? I've got more time for A/B Street in the next few weeks. Also, even if this is feature incomplete but doesn't break anything and makes progress, happy to merge something partially working.

[ticklepoke]

Hi, just checking in -- did you hit any blockers I can help with? I've got more time for A/B Street in the next few weeks. Also, even if this is feature incomplete but doesn't break anything and makes progress, happy to merge something partially working.

Hey, unfortunately I won't have time to work on this anymore. I believe the PR does break something so it can't be merged in its current state.

[dabreegster]

No worries, and thank you for taking it this far! If I have enough time in the next few weeks, I might pick it up