Add a warning when the mic recording filters out >10 seconds of audio

[art-from-the-machine]

Sometimes players experience mic issues like the below when audio_threshold in config.ini is set to the default "auto" value:

02:09:58.517 Level 27: Listening... 02:11:42.227 INFO: Processing audio with duration 01:42.888 02:11:43.015 INFO: VAD filter removed 01:36.360 of audio

A warning needs to be displayed when VAD filter removes >10 seconds of audio. This is a problem where the player's mic picks up on too much background noise.