Set map.json files with map_obj_gfx constants

data/maps/SevenIsland_SevaultCanyon_Entrance/map.json

@@ -25,7 +25,7 @@
   ],
   "object_events": [
     {
-      "graphics_id": "28",
+      "graphics_id": "MAP_OBJ_GFX_WOMAN_2",
       "x": 12,
       "y": 6,
       "elevation": 3,
@@ -38,7 +38,7 @@
       "flag": "0"
     },
     {
-      "graphics_id": "29",
+      "graphics_id": "MAP_OBJ_GFX_BEAUTY",
       "x": 3,
       "y": 34,
       "elevation": 3,
@@ -51,7 +51,7 @@
       "flag": "0"
     },
     {
-      "graphics_id": "25",
+      "graphics_id": "MAP_OBJ_GFX_MAN",
       "x": 4,
       "y": 34,
       "elevation": 3,
@@ -64,7 +64,7 @@
       "flag": "0"
     },
     {
-      "graphics_id": "39",
+      "graphics_id": "MAP_OBJ_GFX_CAMPER",
       "x": 11,
       "y": 26,
       "elevation": 3,
@@ -77,7 +77,7 @@
       "flag": "0"
     },
     {
-      "graphics_id": "40",
+      "graphics_id": "MAP_OBJ_GFX_PICNICKER",
       "x": 10,
       "y": 26,
       "elevation": 3,
@@ -90,7 +90,7 @@
       "flag": "0"
     },
     {
-      "graphics_id": "26",
+      "graphics_id": "MAP_OBJ_GFX_ROCKER",
       "x": 11,
       "y": 17,
       "elevation": 5,