Does audio mixer also support a 'PAUSE' feature (AUD-6039)

[GCTechnology]

Is your feature request related to a problem? Please describe.
That's not a problem, but a meaningful feature I think.

Describe the solution you'd like
As designed in the component ‘audio_pipeline’ and 'esp-adf-libs/esp_audio', audio player usually have three state machines, 'start', 'stop' and 'pause'.
So at least four APIs are provided: 'run', 'pause', 'resume', 'stop'.
I noticed that in 'component/audio_mixer_pipepine' does not have a pause method. So I'm wondering if a mixer also support pause and resume actsions.

Additional context
audio_pipline.h