reorganize some stuff

modules/core_lib/core_lib.otmod

@@ -0,0 +1,19 @@
+Module
+  name: core_lib
+  description: Contains core lua classes, functions and constants used by other modules
+  author: OTClient team
+  website: https://github.com/edubart/otclient
+
+  onLoad: |
+    require 'ext/table'
+    require 'ext/string'
+    require 'math/point'
+    require 'math/size'
+    require 'math/color'
+    require 'math/rect'
+    require 'const'
+    require 'util'
+    require 'globals'
+    require 'dispatcher'
+    require 'widget'
+    require 'effects'