Bools and returns super-pr (#53221)

Replaces like 70-80% of 0 and such, as a side effect cleaned up a bunch of returns
Edit: Most left out ones are in mecha which should be done in mecha refactor already
Oh my look how clean it is

Co-authored-by: TiviPlus <TiviPlus>
Co-authored-by: Couls <coul422@gmail.com>

code/game/objects/structures/fireaxe.dm

@@ -45,7 +45,7 @@
 			return
 		to_chat(user, "<span class='notice'>You start fixing [src]...</span>")
 		if(do_after(user, 20, target = src) && G.use(2))
-			broken = 0
+			broken = FALSE
 			obj_integrity = max_integrity
 			update_icon()
 	else if(open || broken)
@@ -75,7 +75,7 @@
 		if(BURN)
 			playsound(src.loc, 'sound/items/welder.ogg', 100, TRUE)
 
-/obj/structure/fireaxecabinet/take_damage(damage_amount, damage_type = BRUTE, damage_flag = 0, sound_effect = 1, attack_dir)
+/obj/structure/fireaxecabinet/take_damage(damage_amount, damage_type = BRUTE, damage_flag = 0, sound_effect = TRUE, attack_dir)
 	if(open)
 		return
 	. = ..()