Generate heal location constants automatically, move data back to a single file.

data/maps/Route10/map.json

@@ -280,14 +280,5 @@
       "quantity": 1,
       "underfoot": false
     }
-  ],
-  "heal_locations": [
-    {
-      "id": "HEAL_LOCATION_ROUTE10",
-      "x": 13,
-      "y": 21,
-      "respawn_map": "MAP_ROUTE10_POKEMON_CENTER_1F",
-      "respawn_npc": "LOCALID_ROUTE10_NURSE"
-    }
   ]
 }