S3 Box: New initialisation, new events, new illustrations

[jlpouffier]

Graceful initialization A global init_in_progress is initialized to true and set to false only once when the voice_assistant component is able to connect to Home Assistant (on_client_connected)

As long as init_in_progress is true, only one illustration is displayed: An initialization illustration.

If init_in_progress is still true 30s after startup, then it is set to false and the relevant error illustration can be displayed.

This ensures that the box has time to ...

• Connect to WIFI
• Connect to HA
• Connect to the pipeline ... gracefully without throwing errors at first.

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Illustration update

• New illustration for the IDLE state
• Shuffling around illustration for the LISTENING and REPLYING state
• New illustration for the generic ERROR state (Specific error illustrations coming soon)

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New event handling

The REPLYING step is now bounded by on_tts_stream_start and on_tts_stream_end

[jesserockz]

For sanity sake @jlpouffier Do you want to PR the images separately into the repo so the CI will build correctly?

[jlpouffier]

@jesserockz Yeah that would be better... but I am not sure how to do that easily 🙈 Shall I open another PR with just the image? And remove them from this one?