Protected Areas API

Creates a API to query by wdpa_id (to feed third party projects on protected-planet-consumer)

The query can be done using:

http://localhost:3000/api/protected_areas?wdpa_id=[wdpa_id]

You can check the code on

controllers/api/protected_areas.rb
models/protected_areas.rb
test/integration/api_test.rb

This shouldn't be a model method, I think. I was thinking, given how much you're including here, it might be better to not filter out any attributes except for geometry? What do you think?