Adds time defines to a couple of shooting related delay vars (#93966)

## About The Pull Request

Converted `fire_delay` and `shot_delay` vars to use time defines

## Why It's Good For The Game

Code readability

## Changelog
🆑
code: Converted some gun related variables to use time defines, make an
issue report if anything shoots abnormally fast/slow.
/🆑

code/modules/antagonists/abductor/equipment/gear/abductor_items.dm

@@ -262,7 +262,7 @@
 	inhand_icon_state = "shrink_ray"
 	icon_state = "shrink_ray"
 	automatic_charge_overlays = FALSE
-	fire_delay = 30
+	fire_delay = 3 SECONDS
 	selfcharge = 1//shot costs 200 energy, has a max capacity of 1000 for 5 shots. self charge returns 25 energy every couple ticks, so about 1 shot charged every 12~ seconds
 	trigger_guard = TRIGGER_GUARD_ALLOW_ALL// variable-size trigger, get it? (abductors need this to be set so the gun is usable for them)
 

code/modules/antagonists/changeling/powers/mutations.dm

@@ -297,7 +297,7 @@
 	fire_sound = 'sound/effects/splat.ogg'
 	force = 0
 	max_charges = 1
-	fire_delay = 1
+	fire_delay = 1 DECISECONDS
 	throwforce = 0 //Just to be on the safe side
 	throw_range = 0
 	throw_speed = 0