Create a Location model

[raphodn]

Story

We'll store the price's location info separately.
We'll fetch the data from OpenStreetMap.

Some fields to store :

• osm_id & osm_type
• osm_display_name
• osm_lat
• osm_lon
• other ?

Tasks

• Location model
• on Price create, check if a Location already exists, or create a new on + link it to the Price
• on Location create, fetch metadata from OSM
• api endpoint ?

Linked

• Store location OSM tag key & value #280
• Store location OSM country code (e.g. FR) #292