package/kodi-visualisation-goom: bump version to 2.2.1-Leia

Change license file to debian/copyright, since src/Main.cpp changed
between 2.1.0 and 2.2.1.

Signed-off-by: Bernd Kuhls <bernd.kuhls@t-online.de>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>