packagegroup-fslc-gstreamer1.0: Add new package groups for GStreamer 1.0

This includes three new package groups:

 - packagegroup-fslc-gstreamer1.0-commercial
 - packagegroup-fslc-gstreamer1.0-full
 - packagegroup-fslc-gstreamer1.0

Those use the gstreamer1.0-imx plugin to integrate the VPU, when
possible.

Signed-off-by: Carlos Rafael Giani <dv@pseudoterminal.org>
Signed-off-by: Otavio Salvador <otavio@ossystems.com.br>