add level table JSON format

system/item-tables/item-parameter-table-dc-v1.json

@@ -1,4 +1,6 @@
 {
+  // This file matches what's in the client's ItemPMT file. Modifying this file will not affect the client; it only
+  // exists so the server can match the client's behavior.
   "ArmorSaleDivisor": 0.39999997615814209,
   "ArmorStatBoostIndexes": [],
   "ItemCombinations": [],
@@ -795,4 +797,4 @@
     {"UnknownA1": 150.0, "UnknownA2": 20.0, "UnknownA3": 0x271C, "UnknownA4": 0x1999, "UnknownA5": 0xA}
   ],
   "WeaponStatBoostIndexes": []
-}
+}