added some more ai stubs

- created mob class
- added pathfind and targetfind helper classes (todo: actually add stuff to them)
- added action queue helper class (todo: add shit to it)

FFXIVClassic Map Server/actors/chara/ai/PathFind.cs

@@ -0,0 +1,19 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using FFXIVClassic_Map_Server.Actors;
+
+namespace FFXIVClassic_Map_Server.actors.chara.ai
+{
+    class PathFind
+    {
+        private Character owner;
+
+        public PathFind(Character owner)
+        {
+            this.owner = owner;
+        }
+    }
+}