Adds dextrous guardian (#19254)

Added dextrous guardians to the code, able to hold and use items and store a single item within themselves.

Dextrous guardians do low damage on punches, have medium damage resist, and recalling or leashing will force them to drop any items in their hands.

code/game/objects/items/toys.dm

@@ -172,8 +172,8 @@
 /obj/item/toy/gun/afterattack(atom/target as mob|obj|turf|area, mob/user, flag)
 	if (flag)
 		return
-	if (!(istype(usr, /mob/living/carbon/human) || ticker) && ticker.mode.name != "monkey")
-		usr << "<span class='warning'>You don't have the dexterity to do this!</span>"
+	if (!user.IsAdvancedToolUser())
+		user << "<span class='warning'>You don't have the dexterity to do this!</span>"
 		return
 	src.add_fingerprint(user)
 	if (src.bullets < 1)

code/game/objects/items/weapons/storage/storage.dm

@@ -27,7 +27,7 @@
 
 
 /obj/item/weapon/storage/MouseDrop(atom/over_object)
-	if(iscarbon(usr) || isdrone(usr)) //all the check for item manipulation are in other places, you can safely open any storages as anything and its not buggy, i checked
+	if(ismob(usr)) //all the check for item manipulation are in other places, you can safely open any storages as anything and its not buggy, i checked
 		var/mob/M = usr
 
 		if(!over_object)

code/game/objects/structures/beds_chairs/chair.dm

@@ -32,15 +32,12 @@
 	switch(severity)
 		if(1)
 			qdel(src)
-			return
 		if(2)
 			if(prob(70))
 				deconstruct()
-				return
 		if(3)
 			if(prob(50))
 				deconstruct()
-				return
 
 /obj/structure/chair/narsie_act()
 	if(prob(20))
@@ -71,7 +68,6 @@
 		..()
 	else
 		rotate()
-	return
 
 /obj/structure/chair/proc/handle_rotation(direction)
 	handle_layer()
@@ -204,7 +200,7 @@
 /obj/structure/chair/MouseDrop(over_object, src_location, over_location)
 	. = ..()
 	if(over_object == usr && Adjacent(usr))
-		if(!item_chair || !ishuman(usr) || has_buckled_mobs() || src.flags & NODECONSTRUCT)
+		if(!item_chair || !usr.can_hold_items() || has_buckled_mobs() || src.flags & NODECONSTRUCT)
 			return
 		if(usr.incapacitated())
 			usr << "<span class='warning'>You can't do that right now!</span>"