Area & Encounter work. Added override kobold skins.

Area & Encounter work.  Added override kobold skins.  Remade "Gorgon Den".  Setup spawning in "Gargoyle Den".   Setup spawning in "City of Baleas: Wizard's Tower".  Added CODI AI to more creatures & NPCs.

_module/are/gargoyleden.are.json

@@ -96,11 +96,11 @@
   },
   "OnEnter": {
     "type": "resref",
-    "value": ""
+    "value": "sparky_enter"
   },
   "OnExit": {
     "type": "resref",
-    "value": ""
+    "value": "sparky_exit"
   },
   "OnHeartbeat": {
     "type": "resref",
@@ -849,7 +849,7 @@
   },
   "Version": {
     "type": "dword",
-    "value": 7
+    "value": 8
   },
   "Width": {
     "type": "int",