rygel: new package

rygel: new package

Rygel is a home media solution (UPnP AV MediaServer) that allows you to
easily share audio, video and pictures to other devices.

Additionally, media player software may use Rygel to become a
MediaRenderer that may be controlled remotely by a UPnP or DLNA
Controller.

Rygel achieves interoperability with other devices in the market by
trying to conform to the very strict requirements of DLNA and by
converting media on-the-fly to formats that client devices can handle.

Most Rygel functionality is implemented through a plug-in mechanism.

Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
[Thomas:
 - use SPDX license codes
 - add hashes for license files
 - move Config.in comment at the end of the Config.in file to not
   break the indentation of the sub-options.]
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>