[2.0.x] Add Z_AFTER_PROBING option (#10058)

Some "fix-mounted" probes need manual stowing. And after probing some may prefer to raise or lower the nozzle. This restores an old option but tailors it to allow raise or lower as preferred.

Marlin/src/module/probe.cpp

@@ -465,6 +465,16 @@ bool set_probe_deployed(const bool deploy) {
   return false;
 }
 
+#ifdef Z_AFTER_PROBING
+  // After probing move to a preferred Z position
+  void move_z_after_probing() {
+    if (current_position[Z_AXIS] != Z_AFTER_PROBING) {
+      do_blocking_move_to_z(Z_AFTER_PROBING);
+      current_position[Z_AXIS] = Z_AFTER_PROBING;
+    }
+  }
+#endif
+
 /**
  * @brief Used by run_z_probe to do a single Z probe move.
  *

Marlin/src/module/probe.h

@@ -32,6 +32,11 @@
 #if HAS_BED_PROBE
   extern float zprobe_zoffset;
   bool set_probe_deployed(const bool deploy);
+  #ifdef Z_AFTER_PROBING
+    void move_z_after_probing();
+  #else
+    inline void move_z_after_probing() {}
+  #endif
   float probe_pt(const float &rx, const float &ry, const bool, const uint8_t, const bool probe_relative=true);
   #define DEPLOY_PROBE() set_probe_deployed(true)
   #define STOW_PROBE() set_probe_deployed(false)