Updated README

Updated README to prevent anticipation of some unannounced projects.
libwindow: Created the libwindow project

Created the libwindow project along with a CMakeLists.txt for it
libwindow: Added gitignore
libwindow: Added Styles enum
libwindow: Added window Size struct
libwindow: Started BaseWindow class
libwindow: Created platform-dependant preprocessor block

God save me
Removed lazy alias use in codebase