Fix up the colors and rendering so that tilemap just uses components::Tile all the time. Need to load all of the config data from json one time on system start instead of constantly, although constantly does make debugging live easier.

assets/enemies.json

@@ -1,7 +1,7 @@
 {
   "PLAYER_TILE": {
     "components": [
-      {"_type": "Tile", "chr": "\ua66b",
+      {"_type": "Tile", "display": "\ua66b",
         "foreground": [255, 200, 125],
         "background": [30, 20, 75]
       },
@@ -13,7 +13,7 @@
   },
   "EVIL_EYE": {
     "components": [
-      {"_type": "Tile", "chr": "\u08ac",
+      {"_type": "Tile", "display": "\u08ac",
         "foreground": [75, 200, 125],
         "background": [30, 20, 75]
       },