vaapiencode: h265: add main-10 in caps template
vaapiencode: h265: add main-10 in caps template

This patch adds h265's main-10 profile in encoder src caps template.

https://bugzilla.gnome.org/show_bug.cgi?id=771291

ceyusa/gstreamer-vaapi,GStreamer/gstreamer-vaapi,ceyusa/gstreamer-vaapi,GStreamer/gstreamer-vaapi