Change holosign examine; show sign count (#56440)

The examine text of holosign creators now show how many projections are
being maintained.

Co-authored-by: Ranged <nickvanderkroon@gmail.com>

code/game/objects/items/holosign_creator.dm

@@ -18,6 +18,10 @@
 	var/holosign_type = /obj/structure/holosign/wetsign
 	var/holocreator_busy = FALSE //to prevent placing multiple holo barriers at once
 
+/obj/item/holosign_creator/examine(mob/user)
+	. = ..()
+	. += "<span class='notice'>It is currently maintaining <b>[signs.len]/[max_signs]</b> projections.</span>"
+
 /obj/item/holosign_creator/afterattack(atom/target, mob/user, proximity_flag)
 	. = ..()
 	if(!proximity_flag)