lib: Don't just get BlueZ battery info from upower

Handle the battery information for a device even if it is available from a source other than bluetoothd in the upower output.

This means getting battery information from the more authoritative kernel-supported protocol on Logitech devices, as well as being able to have battery information for Bluetooth classic devices like Apple input devices.

See https://gitlab.freedesktop.org/upower/upower/-/merge_requests/166