Check NOZZLE_CLEAN_FEATURE settings (#21332)

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

.github/workflows/test-builds.yml

         # Non-working environment tests
         #- at90usb1286_cdc
         #- STM32F103CB_malyan
+        #- STM32F103RE
         #- mks_robin_mini
 
     steps:

Marlin/src/inc/SanityCheck.h

 #endif
 
 /**
+ * Sanity check for unique start and stop values in NOZZLE_CLEAN_FEATURE
+ */
+#if ENABLED(NOZZLE_CLEAN_FEATURE)
+  constexpr xyz_pos_t start_xyz[8] = NOZZLE_CLEAN_START_POINT,
+                        end_xyz[8] = NOZZLE_CLEAN_END_POINT;
+  #define _CLEAN_ASSERT(N) static_assert(N >= HOTENDS || end_xyz[N].x != start_xyz[N].x || TERN(NOZZLE_CLEAN_NO_Y, false, end_xyz[N].y != start_xyz[N].y), \
+                        "NOZZLE_CLEAN Start and End must be made different on HOTEND " STRINGIFY(N))
+  _CLEAN_ASSERT(0); _CLEAN_ASSERT(1);
+  _CLEAN_ASSERT(2); _CLEAN_ASSERT(3);
+  _CLEAN_ASSERT(4); _CLEAN_ASSERT(5);
+  _CLEAN_ASSERT(6); _CLEAN_ASSERT(7);
+  #undef _CLEAN_ASSERT
+#endif
+
+/**
  * Sanity check for valid stepper driver types
  */
 #define _BAD_DRIVER(A) (defined(A##_DRIVER_TYPE) && !_DRIVER_ID(A##_DRIVER_TYPE))

buildroot/tests/LPC1768

         EXTRUDERS 2 TEMP_SENSOR_1 -1 TEMP_SENSOR_BED 5 \
         GRID_MAX_POINTS_X 16 \
         NOZZLE_TO_PROBE_OFFSET '{ 0, 0, 0 }' \
-        NOZZLE_CLEAN_MIN_TEMP 170
+        NOZZLE_CLEAN_MIN_TEMP 170 \
+        NOZZLE_CLEAN_START_POINT "{ {  10, 10, 3 }, {  10, 10, 3 } }" \
+        NOZZLE_CLEAN_END_POINT "{ {  10, 20, 3 }, {  10, 20, 3 } }"
 opt_enable REPRAP_DISCOUNT_FULL_GRAPHIC_SMART_CONTROLLER ADAPTIVE_FAN_SLOWING NO_FAN_SLOWING_IN_PID_TUNING \
            FILAMENT_WIDTH_SENSOR FILAMENT_LCD_DISPLAY PID_EXTRUSION_SCALING SOUND_MENU_ITEM \
            NOZZLE_AS_PROBE AUTO_BED_LEVELING_BILINEAR PREHEAT_BEFORE_LEVELING G29_RETRY_AND_RECOVER Z_MIN_PROBE_REPEATABILITY_TEST DEBUG_LEVELING_FEATURE \

buildroot/tests/LPC1769

 restore_configs
 opt_set MOTHERBOARD BOARD_SMOOTHIEBOARD \
         EXTRUDERS 2 TEMP_SENSOR_1 -1 TEMP_SENSOR_BED 5 \
-        GRID_MAX_POINTS_X 16
+        GRID_MAX_POINTS_X 16 \
+        NOZZLE_CLEAN_START_POINT "{ {  10, 10, 3 }, {  10, 10, 3 } }" \
+        NOZZLE_CLEAN_END_POINT "{ {  10, 20, 3 }, {  10, 20, 3 } }"
 opt_enable TFTGLCD_PANEL_SPI SDSUPPORT ADAPTIVE_FAN_SLOWING NO_FAN_SLOWING_IN_PID_TUNING \
            FIX_MOUNTED_PROBE AUTO_BED_LEVELING_BILINEAR G29_RETRY_AND_RECOVER Z_MIN_PROBE_REPEATABILITY_TEST DEBUG_LEVELING_FEATURE \
            BABYSTEPPING BABYSTEP_XY BABYSTEP_ZPROBE_OFFSET LEVEL_CORNERS_USE_PROBE LEVEL_CORNERS_VERIFY_RAISED \

buildroot/tests/STM32F103RE

 # Build with the default configurations
 #
 restore_configs
-opt_set MOTHERBOARD BOARD_STM32F103RE SERIAL_PORT -1 EXTRUDERS 2
+opt_set MOTHERBOARD BOARD_STM32F103RE SERIAL_PORT -1 EXTRUDERS 2 \
+        NOZZLE_CLEAN_START_POINT "{ {  10, 10, 3 }, {  10, 10, 3 } }" \
+        NOZZLE_CLEAN_END_POINT "{ {  10, 20, 3 }, {  10, 20, 3 } }"
 opt_enable EEPROM_SETTINGS EEPROM_CHITCHAT REPRAP_DISCOUNT_SMART_CONTROLLER SDSUPPORT \
            PAREN_COMMENTS GCODE_MOTION_MODES SINGLENOZZLE TOOLCHANGE_FILAMENT_SWAP TOOLCHANGE_PARK \
            BAUD_RATE_GCODE GCODE_MACROS NOZZLE_PARK_FEATURE NOZZLE_CLEAN_FEATURE

buildroot/tests/teensy35

 opt_set MOTHERBOARD BOARD_TEENSY35_36 \
         EXTRUDERS 2 TEMP_SENSOR_0 1 TEMP_SENSOR_1 5 TEMP_SENSOR_BED 1 \
         I2C_SLAVE_ADDRESS 63 \
-        GRID_MAX_POINTS_X 16
+        GRID_MAX_POINTS_X 16 \
+        NOZZLE_CLEAN_START_POINT "{ {  10, 10, 3 }, {  10, 10, 3 } }" \
+        NOZZLE_CLEAN_END_POINT "{ {  10, 20, 3 }, {  10, 20, 3 } }"
 opt_enable REPRAP_DISCOUNT_FULL_GRAPHIC_SMART_CONTROLLER LCD_INFO_MENU SDSUPPORT SDCARD_SORT_ALPHA \
            FILAMENT_WIDTH_SENSOR FILAMENT_LCD_DISPLAY CALIBRATION_GCODE BAUD_RATE_GCODE SOUND_MENU_ITEM \
            FIX_MOUNTED_PROBE Z_SAFE_HOMING AUTO_BED_LEVELING_BILINEAR Z_MIN_PROBE_REPEATABILITY_TEST DEBUG_LEVELING_FEATURE \

buildroot/tests/teensy41

 opt_set MOTHERBOARD BOARD_TEENSY41 \
         EXTRUDERS 2 TEMP_SENSOR_0 1 TEMP_SENSOR_1 5 TEMP_SENSOR_BED 1 \
         I2C_SLAVE_ADDRESS 63 \
-        GRID_MAX_POINTS_X 16
+        GRID_MAX_POINTS_X 16 \
+        NOZZLE_CLEAN_START_POINT "{ {  10, 10, 3 }, {  10, 10, 3 } }" \
+        NOZZLE_CLEAN_END_POINT "{ {  10, 20, 3 }, {  10, 20, 3 } }"
 opt_enable EXTENSIBLE_UI LCD_INFO_MENU SDSUPPORT SDCARD_SORT_ALPHA \
            FILAMENT_LCD_DISPLAY CALIBRATION_GCODE BAUD_RATE_GCODE \
            FIX_MOUNTED_PROBE Z_SAFE_HOMING AUTO_BED_LEVELING_BILINEAR Z_MIN_PROBE_REPEATABILITY_TEST DEBUG_LEVELING_FEATURE \