The space_mouse module was Windows-only (hidapi). On Linux it now finds the
multi-axis HID interface through /sys/class/hidraw and reads /dev/hidrawN with
plain std I/O, so there is no new dependency and no libudev needed.
A small report descriptor parser tells devices apart: a top-level Multi-Axis
Controller collection marks the 3D mouse, and report 1 declaring all six axes
selects the combined layout (X Y Z Rx Ry Rz in one report) that some homemade
devices use. Real split devices (report 1 translation, report 2 rotation) keep
their existing decoding. Windows reads the descriptor through hidapi and falls
back to the split layout if it is unavailable.
Co-authored-by: jochenhammes <15869208+jochenhammes@users.noreply.github.com>
Co-authored-by: Claude Sonnet 5.5 <noreply@anthropic.com>
