Better Unit Tests - Runs All Of Them On A Single Map (exc. map unit tests) and C&D Split-Up (#96368)

## About The Pull Request

### Don't run every single test

I've had this on my mind for several months and it being brought up
recently reminded me so here we are.

Unit tests only run on `runtimestation_minimal.dmm` now with the
exception of map tests. The following unit tests are declared as map
tests but I didn't see any map dependent logic so 🤷
- `/datum/unit_test/maptest_baseturfs_unmodified_scrape`
- `/datum/unit_test/maptest_baseturfs_placed_on_top`
- `/datum/unit_test/maptest_baseturfs_placed_on_bottom`
- `/datum/unit_test/maptest_get_turf_pixel`
- `/datum/unit_test/maptest_load_map_security`
- `/datum/unit_test/maptest_modular_map_loader`
- `/datum/unit_test/maptest_turf_icons`

`/datum/unit_test/subsystem_init` isn't really a mapping unit test but I
figured somehow, someway, maps might fuck with subsystem initializations
so I just decided to include it.

### Splits up the create & destroy test

Idk, pretty simple. Create & destroy is now split up across all
integration tests and ran in parallel.

## Why It's Good For The Game

oranges promised me "500 nzd" yo

## Changelog

No player facing changes

code/modules/capture_the_flag/ctf_controller.dm

@@ -233,10 +233,7 @@
 
 ///Creates a CTF game with the provided team ID then returns a reference to the new controller. If a controller already exists provides a reference to it.
 /proc/create_ctf_game(game_id)
-	if(GLOB.ctf_games[game_id])
-		return GLOB.ctf_games[game_id]
-	var/datum/ctf_controller/CTF = new(game_id)
-	return CTF
+	return GLOB.ctf_games[game_id] || new /datum/ctf_controller(game_id)
 
 #undef CTF_DEFAULT_RESPAWN
 #undef CTF_INSTAGIB_RESPAWN

code/modules/capture_the_flag/ctf_game.dm

@@ -20,9 +20,7 @@
 
 /obj/machinery/ctf/Initialize(mapload)
 	. = ..()
-	ctf_game = GLOB.ctf_games[game_id]
-	if(isnull(ctf_game))
-		ctf_game = create_ctf_game(game_id)
+	ctf_game = create_ctf_game(game_id)
 
 ///A spawn point for CTF, ghosts can interact with this to vote for CTF or spawn in if a game is running.
 /obj/machinery/ctf/spawner
@@ -447,10 +445,10 @@
 /obj/effect/ctf/dead_barricade/Initialize(mapload)
 	. = ..()
 	ctf_game = GLOB.ctf_games[game_id]
-	ctf_game.barricades += src
+	ctf_game?.barricades += src
 
 /obj/effect/ctf/dead_barricade/Destroy()
-	ctf_game.barricades -= src
+	ctf_game?.barricades -= src
 	return ..()
 
 /obj/effect/ctf/dead_barricade/proc/respawn()
@@ -473,10 +471,8 @@
 ///Proc that handles toggling and unloading CTF.
 /proc/toggle_id_ctf(user, activated_id, automated = FALSE, unload = FALSE, area/ctf_area = /area/centcom/ctf)
 	var/static/loading = CTF_LOADING_UNLOADED
-	var/datum/ctf_controller/ctf_controller = GLOB.ctf_games[activated_id]
-	if(isnull(ctf_controller))
-		ctf_controller = create_ctf_game(activated_id)
-	if(unload == TRUE)
+	var/datum/ctf_controller/ctf_controller = create_ctf_game(activated_id)
+	if(unload)
 		log_admin("[key_name_admin(user)] is attempting to unload CTF.")
 		message_admins("[key_name_admin(user)] is attempting to unload CTF.")
 		if(loading == CTF_LOADING_UNLOADED)