XHaloFloatingWindow：实现APP窗口化分屏.

官方介绍

XHaloFloatingWindow是一款桌面漂浮空间，自定义后可以在桌面快速的开启应用。需要Xposed框架支持。

更新日志

Add new gravity chooserAdd base code for First Use Screen (not ready yet)Change Main Preference to a sliding navigationChange ActioNBAr to dark + Replace action bar icons with white onesMade popup alpha and popup dim preference live updateCode Refactoring:--> Optimized Movable Window hooks--> Fix mistake in blacklist and whitelist--> Revert "Simplify hook for the Testing Area."