Added empty db/pre-re/item_randomopt_db.txt, follow up f296409ada211a0aa89863db4d9603054845cf65

Signed-off-by: Cydh Ramdh <cydh@pservero.com>

db/pre-re/item_randomopt_db.txt

@@ -0,0 +1,4 @@
+// Items Random Option Database	
+//
+// Structure of Database:
+// ID,{ Bonus Script }