Landmark Shuttles (#8512)

The lifeless live again. Or in this case, what never actually lived here.

Ports Baystation12/Baystation12#17460 probably for real this time. What this allows us to do is create shuttles on runtime and make shuttles easier by just making landmarks and a shuttle instead of areas and shuttles. Also allows runtime landmark creation via flares or whatever AND allows shuttles to use different landmarks at will.

I removed most of the overmap stuff, I think. It shouldn't be hard to slam it in whenever we need to.

Changes:

    "Shuttle code has been completely reworked."
    "Shuttles can now be modified to have more than one destination."
    "Shuttles now have a takeoff sound."
    "You can now throw mobs against walls to damage them. A lot."
    "You now need a neckgrab to throw mobs."
    "BEING UNBUCKLED DURING SHUTTLE LAUNCH IS DANGEROUS! Don't do it."
    "Adminghosts can now interact with all shuttles."

code/controllers/configuration.dm

@@ -185,7 +185,6 @@ var/list/gamemode_cache = list()
 
 	var/use_discord_pins = 0
 	var/python_path = "python" //Path to the python executable.  Defaults to "python" on windows and "/usr/bin/env python2" on unix
-	var/use_overmap = 0
 
 	// Event settings
 	var/expected_round_length = 3 * 60 * 60 * 10 // 3 hours
@@ -719,9 +718,6 @@ var/list/gamemode_cache = list()
 				if("max_maint_drones")
 					config.max_maint_drones = text2num(value)
 
-				if("use_overmap")
-					config.use_overmap = 1
-
 				if("expected_round_length")
 					config.expected_round_length = MinutesToTicks(text2num(value))