qt5/qt53d: new package

[Thomas:
 - order packages alphabetically
 - use tabs for indentation in Config.in
 - add missing BR2_PACKAGE_QT5_JSCORE_AVAILABLE dependency for the
   comment.]

Signed-off-by: Peter Seiderer <ps.report@gmx.net>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>