kinematics: Add get_status() method to kinematics

Signed-off-by: Florian Heilmann <Florian.Heilmann@gmx.net>

klippy/kinematics/corexy.py

@@ -111,6 +111,10 @@ class CoreXYKinematics:
             rail_y.step_itersolve(cmove)
         if axes_d[2]:
             rail_z.step_itersolve(cmove)
+    def get_status(self):
+        return {'homed_axes': "".join([a
+                    for a, (l, h) in zip("XYZ", self.limits) if l <= h])
+        }
 
 def load_kinematics(toolhead, config):
     return CoreXYKinematics(toolhead, config)