Add support for Soundcore Liberty 4

[MrDetBots]

Device Model
Soundcore Liberty 4

State Update Packet
Some(Packet { command: Command([1, 1]), body: [1, 1, 5, 4, 0, 0, 48, 52, 46, 50, 51, 48, 52, 46, 50, 51, 51, 57, 53, 51, 70, 54, 68, 67, 51, 67, 67, 67, 69, 69, 69, 56, 254, 254, 130, 118, 115, 135, 161, 146, 128, 142, 120, 120, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 1, 0, 149, 150, 124, 125, 121, 116, 114, 114, 60, 60, 149, 150, 124, 125, 121, 116, 114, 114, 60, 60, 101, 43, 186, 60, 2, 129, 146, 124, 131, 140, 117, 137, 131, 60, 60, 129, 146, 124, 131, 140, 117, 137, 131, 60, 60, 20, 0, 18, 17, 97, 17, 96, 17, 50, 17, 51, 17, 36, 17, 36, 17, 68, 17, 70, 6, 2, 17, 0, 0, 1, 1, 102, 233, 93, 240, 60, 2, 1, 0, 1, 3, 0, 0, 0, 1, 2, 17, 1, 1, 1, 0, 1, 0, 0, 1, 0, 120, 255, 49, 1, 255, 255] })