Adds a proc to create a shuttle transit area at runtime
Created by: unid15
Requires #11282
Adds the following proc: generate_transit_area(datum/shuttle/shuttle, direction, create_borders = 1). It uses #11282's dungeon system to generate a transit area for any shuttle you want, complete with teleporters on the borders The generated transit areas are just as good as the pre-mapped ones with one exception - stepping out of the shuttle teleports you straight away, instead of tossing you around a bit
Added admin button to Shuttle Magic that does exactly that