Let user open in the PC browser media URL to Android device [2/2]
Let kdeconnect-kde send xesam:url field to remote device in "url" field in PACKET_TYPE_MPRIS packet from Mpris control plugin.
This feature is required for kdeconnect-android!120 (merged) feature on KDE Connect for Android.
Implements #13 (closed) (partially)
See kdeconnect-android!120 (merged) for test plan. This patch does not have any individual test plan, but if it's not working - "Pointing arrow" button won't appear in KDE Connect for Android app.