extra_keys setting for crossed door rando

resources/app/cli/args.json

@@ -665,6 +665,9 @@
     "action": "store_true",
     "type": "bool"
   },
+  "extra_keys": {
+    "type": "int"
+  },
   "calc_playthrough": {
     "action": "store_false",
     "type": "bool"

resources/app/cli/lang/en.json

@@ -425,6 +425,7 @@
       "AlwaysInLogic:    Dark rooms are always considered to be in logic, even if the player cannot see"
     ],
     "crystal_book": [ " Book can be used indoors to flip the state of colored pegs (default: %(default)s)"],
+    "extra_keys": [ " Percentage of extra small keys to create for each dungeon when door shuffle is enabled (default: %(default)s)"],
     "bombbag": ["Start with 0 bomb capacity. Two capacity upgrades (+10) are added to the pool (default: %(default)s)" ],
     "any_enemy_logic": [
       "How to handle potential traversal between dungeon in Crossed door shuffle",