Save 0.4s by shaving off a lot of smaller init costs (#71007)

Starts shaving off a lot of less than 0.1s performance killers by, in
nearly every case, just writing better code.

Numbers are amount saved.

- /obj/machinery/bluespace_vendor/LateInitialize -> 29.4ms
Changes a loop over all machines to a specialized list.

- /obj/structure/table/glass/Initialize -> 42.53ms
Stops every table from initializing glass shards and table frames before
any destruction.

- /obj/structure/chair/Initialize -> 24.64ms
Removes an unnecessary addtimer that existed for chairs that weren't
anchored in emergency shuttles. Didn't do anything.

- /datum/orderable_item/New -> 44.3ms 
Instead of initializing every item to get its desc, just uses initial.
Added a unit test to make sure none are dynamic.

- /obj/machinery/computer/slot_machine/Initialize -> 26.19ms
Currently goes through every coin subtype, creates it, calls a proc,
then qdels it. Changes that to only run once. Could be optimized further
by making the coin info on a datum to avoid creating the object, but it
currently sits at 7.82ms, far below worth caring about for now.

- /obj/machinery/door_buttons/airlock_controller/findObjsByTag -> 3.51ms
Loops over just doors instead of typechecking airlock in machines.

- /obj/structure/closet/Initialize -> 60.57ms
Moves the code for taking everything on the tile from a next-tick timer
to LateInitialize.

- /obj/machinery/rnd/experimentor/Initialize -> 36.92ms
Changes a list that is generated by going through every item in the game
and getting information from a large amount of them to only run when
needed.

- /obj/structure/tank_dispenser/Initialize -> 20.81ms
No longer initializes every tank in it right away, only when needed.

- /obj/machinery/telecomms/LateInitialize -> 16.63ms
Removes `urange` to instead just loop over telecomms machines and check
distance. There's not that many of them.

- /mob/living/simple_animal/hostile/carp/cayenne/Initialize -> 3.17ms
Defers a GAGS overlay creation until its needed. BTW GAGS is
*horrendous* on init costs, and is the root cause for a lot of pretty
terrible performance. I investigated precompiling but the gains weren't
crazy, but likely could be the more stuff is GAGS'd.

- /turf/open/floor/engine/cult/Initialize -> 14.64ms
Temporary visual effect that is created is no longer done on mapload,
since nobody will see it.

- /datum/techweb/specialized/autounlocking/proc/autounlock -> 5.55ms
Changes some loops to shorter checks. This whole proc is pretty bad and
it's still 14.21ms for 17 calls.

- /matrix/New -> 13.41ms
- /matrix/proc/Translate -> 42.06ms
~~Changed the mineral matrice to only generate once, then take it from a
static.~~ An extra ~0.05s taken off by avoiding setting icon and
transform every Initialize.

code/modules/mapfluff/ruins/lavalandruin_code/elephantgraveyard.dm

@@ -54,7 +54,7 @@
 	color = "#B5651D"
 	turf_type = /turf/open/misc/asteroid/basalt/wasteland
 	baseturfs = /turf/open/misc/asteroid/basalt/wasteland
-	smooth_icon = 'icons/turf/walls/rock_wall.dmi'
+	icon = 'icons/turf/walls/rock_wall.dmi'
 	base_icon_state = "rock_wall"
 	smoothing_flags = SMOOTH_BITMASK | SMOOTH_BORDER