Add delta feedrate scaling (#11153)

Marlin/src/config/examples/delta/generic/Configuration.h

@@ -512,6 +512,9 @@
   // and processor overload (too many expensive sqrt calls).
   #define DELTA_SEGMENTS_PER_SECOND 200
 
+  // Convert feedrates to apply to the Effector instead of the Carriages
+  #define DELTA_FEEDRATE_SCALING
+
   // After homing move down to a height where XY movement is unconstrained
   //#define DELTA_HOME_TO_SAFE_ZONE