probe: Add a probing_move() wrapper to low-level mcu_probe class

This allows the low-level probe class more control on the probing
implementation.

Signed-off-by: Kevin O'Connor <kevin@koconnor.net>

klippy/extras/smart_effector.py

@@ -78,6 +78,9 @@ class SmartEffectorEndstopWrapper:
         self.gcode.register_command("SET_SMART_EFFECTOR",
                                     self.cmd_SET_SMART_EFFECTOR,
                                     desc=self.cmd_SET_SMART_EFFECTOR_help)
+    def probing_move(self, pos, speed):
+        phoming = self.printer.lookup_object('homing')
+        return phoming.probing_move(self, pos, speed)
     def probe_prepare(self, hmove):
         toolhead = self.printer.lookup_object('toolhead')
         self.probe_wrapper.probe_prepare(hmove)