Add more aerialway tags to transportation layer (#1343)

Before this, only `aerialway=cable_car` and `aerialway=gondola` were included in the tiles. That misses some widely-used tags, notably `aerialway=chair_lift`, `aerialway=drag_lift`, and `aerialway=platter`. The usage of all the tags added in this commit, by fraction of all aerialway way keys (according to TagInfo), is:

| Tag                    | Usage  |
|------------------------|-------:|
| `aerialway=chair_lift` | 25.51% |
| `aerialway=drag_lift`  | 12.93% |
| `aerialway=platter`    | 11.35% |
| `aerialway=t-bar`      |  7.93% |
| `aerialway=j-bar`      |  0.63% |
| `aerialway=mixed_lift` |  0.24% |

Some of these tags were also added in PR #620 back in May 2019, but were removed again before it was merged.

Fixes #1342.

layers/transportation/mapping.yaml

@@ -320,8 +320,14 @@ tables:
     - *usage
     mapping:
       aerialway:
-      - cable_car
+      - chair_lift
+      - drag_lift
+      - platter
+      - t-bar
       - gondola
+      - cable_car
+      - j-bar
+      - mixed_lift
 
 # etldoc: imposm3 -> osm_shipway_linestring
   shipway_linestring: