modules/atmospherics major cleanup (#61904)

major cleanup of modules/atmospherics folder and all related files, still many missing
-cleanup of procs name
-cleanup of vars name
-documentation of some of the procs
-minor changes to some for() logic (no in game changes just early continue or as anything checks)

No in game changes, only code and docs

code/game/objects/items/devices/forcefieldprojector.dm

@@ -56,7 +56,7 @@
 			force_proj_busy = FALSE
 			return
 		force_proj_busy = FALSE
-	
+
 	playsound(src,'sound/weapons/resonator_fire.ogg',50,TRUE)
 	user.visible_message(span_warning("[user] projects a forcefield!"),span_notice("You project a forcefield."))
 	var/obj/structure/projected_forcefield/F = new(T, src)
@@ -102,7 +102,7 @@
 	density = TRUE
 	mouse_opacity = MOUSE_OPACITY_OPAQUE
 	resistance_flags = INDESTRUCTIBLE
-	CanAtmosPass = ATMOS_PASS_DENSITY
+	can_atmos_pass = ATMOS_PASS_DENSITY
 	armor = list(MELEE = 0, BULLET = 25, LASER = 50, ENERGY = 50, BOMB = 25, BIO = 100, RAD = 100, FIRE = 100, ACID = 100)
 	var/obj/item/forcefield_projector/generator