Add speed configuration for home-bumping movement

Marlin/example_configurations/Hephestos/Configuration.h

@@ -413,6 +413,8 @@ const bool Z_MAX_ENDSTOP_INVERTING = true; // set to true to invert the logic of
     #define RIGHT_PROBE_BED_POSITION 170
     #define FRONT_PROBE_BED_POSITION 20
     #define BACK_PROBE_BED_POSITION 170
+    
+    #define MIN_PROBE_EDGE 10 // The probe square sides can be no smaller than this
 
     // Set the number of grid points per dimension
     // You probably don't need more than 3 (squared=9)

Marlin/example_configurations/Hephestos/Configuration_adv.h

@@ -214,6 +214,7 @@
 #define X_HOME_RETRACT_MM 5
 #define Y_HOME_RETRACT_MM 5
 #define Z_HOME_RETRACT_MM 2
+#define HOMING_BUMP_DIVISOR {10, 10, 20}  // Re-Bump Speed Divisor (Divides the Homing Feedrate)
 //#define QUICK_HOME  //if this is defined, if both x and y are to be homed, a diagonal move will be performed initially.
 
 #define AXIS_RELATIVE_MODES {false, false, false, false}