Modifies the startup sequence to read the volume_level from the loaded preferences.
This saved value is then passed as the initial_volume when creating the music_player and tts_player instances.
Passes the event_bus and loop instances into the ServerState object upon creation.
Adds new command-line arguments (--led-interface, --led-clock-pin, --led-data-pin) to allow the user to select and configure the LED hardware interface at runtime.
imonlinux