Add missing data to the pmtiles.

[jcpitre]

In #1305 we create routes.pmtiles and stops.pmtiles.
Unfortunately these files are not complete.

• For routes:

  • The routes geojson file needs the properties route_short_name, route_long_name, route_id, route_type, route_color, route_text_color [all strings]
  • Currently we have too many properties, so we should remove some
  • Mandatory fields:
    • route_id (default to route_id if route_short_name and route_long_name don't exist)
    • route_type

• Include route_short_name, route_long_name, route_id

• For stops:

  • The stops geojson file needs the properties stop_id, route_ids (a list), route_colors, stop_code, stop_name, wheelchair_boarding, location_type, stop_lat, stop_lon
  • Currently each stop has the properties of an entry in stops.txt (See stops.txt). So some properties need to be removed ans others added.

• Mandatory fields:

  • stop_id
  • route_ids
  • stop_lat
  • stop_long

Stretch goals (marked out of scope):

• Agency name

[jcpitre]

Blocked by #1290