Added a first non-functioning console-overlay

* Would make use of developer mode in the Dota 2 console.

* Does not work because of problems outlined in the [Dota 2 Dev
  Forum](http://dev.dota2.com/showthread.php?t=110357)
Added setup.py
Basic autohotkey overlay working, still has quirks
Fixed overlay popup on startup

Todos left:
* Check for Dota 2 window to be active
* Implement hotkey to toggle the overlay alltogether
Overlay only appears in Dota 2 window, is pausable