Latency statistics in Stats modal

[olignyf]

Any objection or ideas about adding latency stats in the View > Stats modal ?

Maybe we could reduce the Output Status section and add another dark background section under it for Streaming Latency statistics.
Each module related to streaming (not recording) could report their latency and then we add the total at the bottom.

• Each reported in milliseconds
• Hide lines for modules where stats has always been 0ms since stream start to reduce clutter, for example "Stream Delay"

Some examples of modules:

• Audio encode input buffer
• Video encode
• Mux/interleaving (is there multiple stages for this?)
• Stream delay (if enabled)
• Streaming protocol