[Feature] Add a Push-to-talk mode - for walkie talkie like functionality.

[Centuriondan]

Is there an existing request for feature?

• [X] I have searched the existing issues

What feature would you like?

Push-to-talk walkie talkie like function.

Push-to-talk mode should provide an easy way of sending a short audio/video message using press and hold or and press+depress, that is then shared to either the target contact or group.

When receiving an audio/video message in PTT mode, it should automatically play the message from any contacts or group where PTT-autoplay has been set.

Anything else?

No response