Voice Chat (2d Version)

We want to implement a voice chat for human-human and machine-human communication, e.g. sspathak/VoiceChat

• set-up a communication channel (e.g. server-client)
• two versions
  • push to talk
  • send everything
• raise Error when voice chat is activated, but more than two people are connected

Later we need speech to text to communicate to the agent and text to speech to communicate from the agent (implemented in agent)