bdk: usb: revamp hid logic

- Add support for GET REPORT. Allows OS to get a single input report.
- Add support for SET_IDLE. Allows OS to control when to send input reports

The SET IDLE and the underlying logic change fixes several things:
- The old issue of congestion in some systems.
- The new bug that would not allow setup packets to be received because mode
 was set to only send when there are changes.
- Now this starts properly as the old code but allows to be changed by OS on
 demand, while continuing servicing setup packets.

bdk/usb/usb_gadget_ums.c

@@ -285,7 +285,7 @@ static void raise_exception(usbd_gadget_ums_t *ums, enum ums_state new_state)
 
 static void _handle_ep0_ctrl(usbd_gadget_ums_t *ums)
 {
-	if (usb_ops.usbd_handle_ep0_ctrl_setup())
+	if (usb_ops.usbd_handle_ep0_ctrl_setup(NULL))
 		raise_exception(ums, UMS_STATE_PROTOCOL_RESET);
 }