Add a "private" tag to all providers

### Difficulty
Medium (1-2 people)

### Description
Go into the Firestore Console and add a new field "private" for each "team". Set "private" to false for all teams except "bog".

Now in Providers Routes, create a conditional that sets a team marked as "private" as a PrivateRoute instead of a regular Route. This will make it so only logged in users will be able to see a "private" map.