Save new camp locations

[pookage]

When the user clicks 'make camp'

• we request nearby (<1000m) locations where people have camped in the past
• we show all nearby camps to the user, as well as a suggestion to create a new camp (if they're >100m from their last camp)
• allow the user to create a new camp if there isn't one within 100m
  • if they try to create a camp within 100m of another camp, they will check-in to that camp instead
• record the last time that a camp was used
  • in-use (active)
  • hot (<1hr)
  • warm (<12hrs)
  • cold (<48hrs)
  • abandoned (>48hrs)
• Campfires provide a companion-wide morale-boost when you camp at them