Adjustable ADC debounce delay (#16264)

Marlin/src/inc/SanityCheck.h

@@ -2509,3 +2509,7 @@ static_assert(   _ARR_TEST(3,0) && _ARR_TEST(3,1) && _ARR_TEST(3,2)
     #error "SHOW_REMAINING_TIME currently requires a Graphical LCD."
   #endif
 #endif
+
+#if HAS_ADC_BUTTONS && defined(ADC_BUTTON_DEBOUNCE_DELAY) && !WITHIN(ADC_BUTTON_DEBOUNCE_DELAY, 16, 255)
+  #error "ADC_BUTTON_DEBOUNCE_DELAY must be an integer from 16 to 255."
+#endif