[Bug 720596] New: missing-plugins: Add funcs to generate detail and installer desc from GstStructures

[GStreamer (bugzilla.gnome.org)]

https://bugzilla.gnome.org/show_bug.cgi?id=720596
  GStreamer | gst-plugins-base | unspecified

           Summary: missing-plugins: Add funcs to generate detail and
                    installer desc from GstStructures
    Classification: Platform
           Product: GStreamer
           Version: unspecified
        OS/Version: All
            Status: UNCONFIRMED
          Severity: normal
          Priority: Normal
         Component: gst-plugins-base
        AssignedTo: gstreamer-bugs at lists.freedesktop.org
        ReportedBy: thibault.saunier at collabora.com
         QAContact: gstreamer-bugs at lists.freedesktop.org
     GNOME version: ---


With the current API of GstDiscoverer we do not have access to the GstMessage
directly
but to its contained GstStructure, this lead to various application
basically copy pasting those method from pbutils in their code. Instead
add some simple API's to simplify the generation of those strings
directly from the GstStructure.

API:
  gst_missing_plugin_message_get_description_from_struct
  gst_missing_plugin_message_get_installer_detail_from_struct

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