Add TTS agent utilising connectors

[rachwalk]

To create a TTS agent alike the ASR aent:

Functional requirements:

• Receiving messages through ROS
  • Ros connector - feat: add ros2 hri connector #410
  • Handling of cancelling speech tasks
  • Handling of pausing speech tasks
  • Handling of continuing speech tasks
• Playing transcribed speech through sound device
  • Refactor transcription models for them to remain supported
  • Sound device connector - feat: general audio connector #393

[rachwalk]

Closing this issue with #419