Tales of MacVenture: Some basic progress

Finally some progress in bringing MacVenture engine back to life.

Progress :

1. Self Window is now displaying
2. offset problem inside some windows ( Inventory, Main, Commands) solved.
3. Command Window buttons are now working and not crashing

Problems yet to be solved, to make engine work as before :

1. Window positioning is slightly messed up (especially commands window)
2. I think offset inside Exit Window is kinda messed up
3. And a small task of resizing output console window