Added a possibility to select which speaker device to use

[icarosadero]

This change allows the user to select which device to use for the calls to sounddevice.play. It can be set as an extra option in the glados_config.yml file like so:

Glados:
  completion_url: "http://localhost:11434/api/chat"
  model: "llama3.2"
 (...)
  wake_word: null
IO:
  speaker_device: <id_to_speaker_device>

To list the available devices and their IDs, just run sounddevice.query_devices()

Summary by CodeRabbit

• New Features

  • Added support for configuring audio output device through a YAML configuration file
  • Enhanced system configuration with flexible device selection

• Improvements

  • Improved configuration loading with fallback encoding support