One needs to get HID feature report 5
(calibration) to switch each controller into the extended mode,
unlike DualShock / DualSense they don't seem to report anything (input doesn't work) in the normal
state after just connecting them via standard HID.
data[00] always 0x31
data[01] always 0x_1, with the upper byte being an incrementing counter from 0 to 0xf for each packet and wrapping around
data[02] 0xff - L / R stick X-axis, 0 is left, 0xff is right (analog) (same field for the respective stick in each controller)
data[03] 0xff - L / R stick Y-axis, 0 is up, 0xff is down (analog) (same field for the respective stick in each controller)
data[04] 0xff - L2 / R2 trigger pull, from 0 to fully pulled at 0xff (analog)