Add feature to monitor own voice/frequency

[lucianoasmus]

Feature request: Add option where you can hear yourself while talking on frequency, which would be especially helpful to check the own microphone input, compare the volume level to the one of pilots etc.
AfV had the option to monitor the own frequency by adding a station that is not in the database, if a similar feature could be added to TA, maybe even without the delay you have in the other AfV software by finding an internal solution that would be absolutely amazing!