Refactors shuttles to be loaded in, rather than be on the station maps (

tgstation#33766)

* Refactors shuttles to be loaded in, rather than be on the station maps

- Shuttles are now loaded in by the shuttle subsystem.

You configure what shuttles are loaded in via
`/obj/configuration/shuttle_load` objects.

* Box arrivals shuttle is now imported from template

* Moves things out of the #ifdef

* Box emergency shuttle is now imported

* Box emergency shuttle is now templated

* Box ferry and whiteship now load from template

* More shuttles on Box done

* Apart from the pods, Box is now completely templated

* Delta now has all non-awkward shuttles loaded in

And Centcom..

* Removes no ops turfs, more error messages

* Fixes slightly chopped off external wall

* Massaging more shuttles into working correctly

* Debug messages are king

* Delta cargo shuttle now docks again

* First pass of Metastation shuttles

* Omegastation first pass

* Metastation now has its own shuttle

* Did most shuttles on Pubby

* Turns out Pubby arrival shuttle is slightly smaller than Box arrival

* Whoops, missed a stationary port

* TGMified the pubby arrival shuttle

* First pass, box is working

* All stations now have roundstart_template and no configuration objects

* Removes roundstart_move

* Why do we even have these unused keys

* Remove unused coded vars

* removes some excessive safety checks

* Missed some Centcom cargo dock stuff

* Got it working again

* That thing that Cyberboss wanted

* Noop turfs the shuttle templates

* And template noop for the area

* Attempts to assuage travis

* Warning!

* Please love me, Travis

* RIP Remie

_maps/boxstation.json

@@ -1,5 +1,11 @@
 {
     "map_name": "Box Station",
     "map_path": "map_files/BoxStation",
-    "map_file": "BoxStation.dmm"
+    "map_file": "BoxStation.dmm",
+    "shuttles": {
+	    "cargo": "cargo_box",
+	    "ferry": "ferry_fancy",
+	    "whiteship": "whiteship_meta",
+	    "emergency": "emergency_box"
+    }
 }

_maps/deltastation.json

@@ -1,5 +1,11 @@
 {
     "map_name": "Delta Station",
     "map_path": "map_files/Deltastation",
-    "map_file": "DeltaStation2.dmm"
+    "map_file": "DeltaStation2.dmm",
+    "shuttles": {
+	    "emergency": "emergency_delta",
+	    "ferry": "ferry_fancy",
+	    "cargo": "cargo_delta",
+	    "whiteship": "whiteship_delta"
+    }
 }