Update orientation.py

adding mode ='user'

Author: Sahil-pixel

plyer/platforms/android/orientation.py

@@ -31,6 +31,8 @@ def _set_sensor(self, **kwargs):
         if mode == 'any':
             activity.setRequestedOrientation(
                 ActivityInfo.SCREEN_ORIENTATION_SENSOR)
+        elif:mode =='user':
+            activity.setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_USER)
         elif mode == 'landscape':
             activity.setRequestedOrientation(
                 ActivityInfo.SCREEN_ORIENTATION_SENSOR_LANDSCAPE)