Move heal locations data to their associated map.json (#2034)

data/maps/EverGrandeCity/map.json

@@ -192,5 +192,17 @@
       "player_facing_dir": "BG_EVENT_PLAYER_FACING_NORTH",
       "script": "Common_EventScript_ShowPokemonCenterSign"
     }
+  ],
+  "heal_locations": [
+    {
+      "id": "HEAL_LOCATION_EVER_GRANDE_CITY",
+      "x": 27,
+      "y": 49
+    },
+    {
+      "id": "HEAL_LOCATION_EVER_GRANDE_CITY_POKEMON_LEAGUE",
+      "x": 18,
+      "y": 6
+    }
   ]
 }