Added options:

• label_no_device: The string to display {device_name} when no devices are connected.
• label_device_separator: The string to separate multiple device names.
• max_length: The maximum number of characters of the label text. If the text exceeds this length, it will be truncated.
• max_length_ellipsis: The string to append to truncated label text.
• device_aliases: A list of dictionaries specifying device aliases. Each dictionary should contain a name and an alias. The name is the real name of the device, and the alias is the text to display for that device.