Add winter sports related POIs

[nvkelso]

Pairing with #342 and #343, we should add a few more POIs for winter sports.

• Sled rental (rental=sled or amenity=sled_rental)
• Ski rental (rental=ski or amenity=ski_rental)
• Ski school (amenity=ski_school)
• Mountain rescue and ski patrol (amenity=mountain_rescue)
• Bobsled track (sport=bobsled)
• Ski playgrounds (leisure=ski_playground)

Any others seem interesting? Add them to the list :)

[zerebubuth]

sport=bobsled doesn't appear to be in the database at all (taginfo), but there are 8 instances of sport=luge, so we can use that instead. The sled rental tags only have a single use apiece, which makes me think they're not well-used. However, there are 1,603 uses of man_made=snow_cannon and 1,485 for man_made=snow_fence.

We're going to have the same problem for rental keys as we had for #423 - since that key isn't in osm2pgsql.style we aren't guaranteed to get all of them in the database. We should get most, though, as rental shops probably have names.

[nvkelso]

Luge instead of Bobsled sounds fine. Let's skip the sled rental. Good catch on the snow cannon and snow fence!

File related issue for the rental keys?

[zerebubuth]

Screenshots for a couple of winter sports POI types:

Ski shop in Big Bear:

Scene file snippet:

                ski-rental-or-shop:
                  filter:
                    any:
                      - kind: [ski, ski_rental]
                      - { kind: sports, sport: skiing }
                  draw: { icons: { sprite: marijuana-dispensary } }

Ski jumping "racetracks" in Lake Placid

Scene file snippet:

        racetrack:
          filter: { kind: racetrack }
          draw:
            lines:
              interactive: true
              order: 5
              cap: round
              join: round
              color: '#cc3333'
              width: [[13,3px],[15, 4px], [16, 5px], [18, 10m], [19, 15m]]

[zerebubuth]

File related issue for the rental keys?

Good point, filed #433 so that we don't lose this issue.

[nvkelso]

NOTE: migration still needs to be sorted out for some rental tags.

[nvkelso]

Fixed up the sports_centre landuse AOI color, too, so it's not green on green in this area (can see the entire ski training area polygon now, the pitches, and the runs).

[nvkelso]

I've verified a good many of these, going to assume the rest of them are working. If something needs tuning, we'll follow up in the next release.

[nvkelso]

@sensescape you could really go wild with new icons here!

'ski'
'ski_rental'
'ski_school'
'snow_cannon'
'athletics', 'running', 'horse_racing', 'bmx',
'disc_golf', 'cycling', 'ski_jumping', 'motor', 'karting',
'obstacle_course', 'equestrian', 'alpine_slide', 'soap_box_derby',
'mud_truck_racing', 'skiing', 'drag_racing', 'archery'

[sensescape]

oooooh!