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/admin/verbs/SDQL2/SDQL_2.dm

@@ -634,14 +634,14 @@ GLOBAL_DATUM_INIT(sdql2_vv_statobj, /obj/effect/statclick/SDQL2_VV_all, new(null
 				if(!is_proper_datum(i))
 					continue
 				world.SDQL_var(i, query_tree["call"][1], null, i, superuser, src)
-				obj_count_finished++
+				obj_count_finished += 1
 				SDQL2_TICK_CHECK
 				SDQL2_HALT_CHECK
 
 		if("delete")
 			for(var/datum/d in found)
 				SDQL_qdel_datum(d)
-				obj_count_finished++
+				obj_count_finished += 1
 				SDQL2_TICK_CHECK
 				SDQL2_HALT_CHECK
 
@@ -663,7 +663,7 @@ GLOBAL_DATUM_INIT(sdql2_vv_statobj, /obj/effect/statclick/SDQL2_VV_all, new(null
 					if(!is_proper_datum(d))
 						continue
 					SDQL_internal_vv(d, set_list)
-					obj_count_finished++
+					obj_count_finished += 1
 					SDQL2_TICK_CHECK
 					SDQL2_HALT_CHECK
 	if(islist(obj_count_finished))