Window management

[darclander]

Currently the window management is handled with input to the application via argc in C++. The default value for 0 arguments is to set the window width: 1920 and height: 1080. A better solution would be to find the window dimensions and set the width / height accordingly.

• Find a solution to retrieve window dimensions.
• Use above solution to remove the default argument and use the retrieved dimensions.
• Find multiple windows (monitors) and create a "big" window to display the background on.