Incorporate more types of Yukon areas

[cstephen]

This PR incorporates the following new Yukon areas into the API:

• Yukon Fire Districts (YTFD*)
• Yukon Game Management Subzones (YTGMA*)
• Yukon Watersheds (YTHYDRO*)

The code in this PR is currently using the playground:all_areas_test5 layer/shapefile from GeoServer, which is the soon-to-be production layer/shapefile that includes all previous polygons + the new Yukon areas listed above. This is to help us with testing, but we'll need to change this back to all_boundaries:all_areas before merging this branch into main, and also update that layer in GeoServer. Once this PR is marked as approved, I'll do this cleanup work before merging.

To test:

• Boot up the API from this branch, pointed at Apollo (default)
• Go to http://localhost:5000/places/all and confirm that each of the three new Yukon area types listed above (YTFD*, YTGMA*, YTHYDRO*) are represented in the JSON response
• Go to http://localhost:5000/places/search/62.69/-136.56 and confirm that you see each of the three new Yukon area types here too