[FEATURE] Add GStreamer Output

[flightradar23]

Hi there,
I would like to suggest a new output - GStreamer.

GStreamer allows you to build your own pipeline of inputs, conversions and outputs. This would save you having to write multiple output or audio format plugins. I, for example, would use it to output Opus to an Icecast server. Other examples of GStreamer use include converting the audio to Vorbis format (thus solving #99), or sending the output via the SRT protocol (solving #392).

Potentially, GStreamer could also be used to create HLS or DASH output or connect to any number of other services.

While you can use gst-launch-1.0 to create these pipelines from RTLSDR-Airband currently, the developers recommend writing an application to interface with GStreamer.

Information about developing a GStreamer interface are available on their website.

Thanks for reading.