Add Bed PID edit/autotune menu items (#18250)

Co-authored-by: Scott Lahteine <thinkyhead@users.noreply.github.com>

Marlin/src/lcd/menu/menu_advanced.cpp

 
     #if ENABLED(PID_EDIT_MENU)
       #define __PID_BASE_MENU_ITEMS(N) \
-        raw_Ki = unscalePID_i(PID_PARAM(Ki, N)); \
-        raw_Kd = unscalePID_d(PID_PARAM(Kd, N)); \
-        EDIT_ITEM_N(float52sign, N, MSG_PID_P_E, &PID_PARAM(Kp, N), 1, 9990); \
+        raw_Ki = unscalePID_i(TERN(PID_BED_MENU_SECTION, thermalManager.temp_bed.pid.Ki, PID_PARAM(Ki, N))); \
+        raw_Kd = unscalePID_d(TERN(PID_BED_MENU_SECTION, thermalManager.temp_bed.pid.Kd, PID_PARAM(Kd, N))); \
+        EDIT_ITEM_N(float52sign, N, MSG_PID_P_E, &TERN(PID_BED_MENU_SECTION, thermalManager.temp_bed.pid.Kp, PID_PARAM(Kp, N)), 1, 9990); \
         EDIT_ITEM_N(float52sign, N, MSG_PID_I_E, &raw_Ki, 0.01f, 9990, []{ copy_and_scalePID_i(N); }); \
         EDIT_ITEM_N(float52sign, N, MSG_PID_D_E, &raw_Kd, 1, 9990, []{ copy_and_scalePID_d(N); })
 
       REPEAT_S(1, HOTENDS, PID_EDIT_MENU_ITEMS)
     #endif
 
+    #if ENABLED(PIDTEMPBED)
+      #if ENABLED(PID_EDIT_MENU)
+        #define PID_BED_MENU_SECTION
+        __PID_BASE_MENU_ITEMS(-1);
+        #undef PID_BED_MENU_SECTION
+      #endif
+      #if ENABLED(PID_AUTOTUNE_MENU)
+        #ifndef BED_OVERSHOOT
+          #define BED_OVERSHOOT 5
+        #endif
+        EDIT_ITEM_FAST_N(int3, -1, MSG_PID_AUTOTUNE_E, &autotune_temp_bed, 70, BED_MAXTEMP - BED_OVERSHOOT, []{ _lcd_autotune(-1); });
+      #endif
+    #endif
+
     END_MENU();
   }