Function is_likely_u3v_device 

pub fn is_likely_u3v_device(desc: &DeviceDescriptor) -> bool

Check whether a device descriptor looks like it could be a U3V device.

USB3 Vision uses IAD class 0xEF, subclass 0x02, protocol 0x01 at the device level, but some cameras use 0x00 (per-interface). This is a coarse filter; full detection requires inspecting interface descriptors via parse_u3v_interfaces.