Change: replace nearby_tile_platform_type with nearby_tile_tile_type.

[frosch123]

Station variable nearby_tile_platform_type has a weird name and weird value range 0-3, compared to the other tile_type variables and callbacks with range 0-7.

This renames the variable and changes the value range to fit with the rest.

• name: nearby_tile_tile_type
• range 0-8
• the orientation bit is relative to the querying tile's orientation, but that can be explained in the docs.