feat(android): expose uiFlags

[m1ga]

Expose uiFlags on the window.

Use

var win = Ti.UI.createWindow({});
win.open();
win.uiFlags = 8192;

or

var win = Ti.UI.createWindow({
  uiFlags: 8192
});
win.open();

to set SYSTEM_UI_FLAG_LIGHT_STATUS_BAR (dark statusbar text color)