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/power/singularity/containment_field.dm

@@ -18,7 +18,7 @@
 /obj/machinery/containment_field/Initialize()
 	. = ..()
 	shockdirs = list(turn(dir,90),turn(dir,-90))
-	sense_proximity(callback = .HasProximity)
+	sense_proximity(callback = /atom/proc/HasProximity)
 
 /obj/machinery/containment_field/set_dir(new_dir)
 	. = ..()
@@ -26,7 +26,7 @@
 		shockdirs = list(turn(dir,90),turn(dir,-90))
 
 /obj/machinery/containment_field/Destroy()
-	unsense_proximity(callback = .HasProximity)
+	unsense_proximity(callback = /atom/proc/HasProximity)
 	if(FG1 && !FG1.clean_up)
 		FG1.cleanup()
 	if(FG2 && !FG2.clean_up)

code/modules/power/singularity/particle_accelerator/particle_accelerator.dm

@@ -244,7 +244,6 @@ So, hopefully this is helpful if any more icons are to be added/changed/wonderin
 			update_state()
 		update_icon()
 		return 1
-	return 0
 
 
 
@@ -384,4 +383,3 @@ So, hopefully this is helpful if any more icons are to be added/changed/wonderin
 			update_use_power(USE_POWER_IDLE)
 		update_icon()
 		return 1
-	return 0