Linter Introduction + Cleanup (#8085)

* Adds linter defines to repo.

* Uncomments linter defines already in the code.

* Resolves unreachable code linter errors.

* Nukes decade+ old syndie specops code except for computer since that's mapped in?????

* Resolves procs has no parent linter error.

* Proc signature fixes

* Bad comments

* "In" danger

* Type safety

* Implied nested list abuse

* Top level ..() usage

* Sleepy coder typos

* Invalid kwargs calls

* Pointless returns

* Linter hacks (see full message)

Byond doesn't care and it has no effect but linter doesn't like var/proc
for holding references to procs, despite that it's valid byond code.

Also, the linter seems to have serious issues figuring out relative
proc names. This commit is a sort of take-it-or-leave-it thing. It's not
required, it just cuts down on warnings, but this code is valid DM code.

* WHATEVER THIS IS

* Trick dreamchecker linter into ignoring this file's sins in it's weird use of vars

* Fix list decoration syntax - Its a list, not list of lists

- To declare that a var is a list you can `var/list/blah = list()` syntax or the `var/blah[0]` syntax.  Both do exactly the same thing. But if you do `var/list/blah[0]` that is just like doing `var/list/list/blah = list()`

* Hopefully stops the ai holder subtype folder from going quantum and sometimes changes capitalization over time, and incidentally causing 20+ linter errors.

* Fixes unwrapped negated object in list linter error.

* Resolves colon-like list accessing linter error.

* Turns linter on in linter config.

* Fixes closet indentation properly and cleans up suit storage unit switch.

Co-authored-by: Aronai Sieyes <arokha@arokha.com>
Co-authored-by: Leshana <Leshana@users.noreply.github.com>

code/modules/shuttles/escape_pods.dm

@@ -72,10 +72,10 @@
 	if((. = ..()))
 		return
 
-	if("manual_arm")
+	if(href_list["manual_arm"])
 		pod.arming_controller.arm()
 		return TOPIC_REFRESH
-	if("force_launch")
+	if(href_list["force_launch"])
 		if (pod.can_force())
 			pod.force_launch(src)
 		else if (emergency_shuttle.departed && pod.can_launch())	//allow players to manually launch ahead of time if the shuttle leaves

code/modules/shuttles/web_datums.dm

@@ -220,6 +220,7 @@
 		return current_destination.routes.Copy()
 
 /datum/shuttle_web_master/proc/get_current_destination()
+	RETURN_TYPE(/datum/shuttle_destination)
 	return current_destination
 
 /datum/shuttle_web_master/proc/get_destination_by_type(var/type_to_get)