BTT002: Add runout, PLR, and RGB pins (#16442)

Marlin/src/pins/stm32/pins_BTT_BTT002_V1_0.h

 #define Z_MAX_PIN          PD1
 
 //
-// Z Probe must be this pins  ##
+// Z Probe must be this pin
 //
 #ifndef Z_MIN_PROBE_PIN
   #define Z_MIN_PROBE_PIN  PD1
 #endif
 
 //
+// Filament Runout Sensor
+//
+#ifndef FIL_RUNOUT_PIN
+  #define FIL_RUNOUT_PIN   PA15
+#endif
+
+//
+// Power Loss Detection
+//
+#ifndef POWER_LOSS_PIN
+  #define POWER_LOSS_PIN   PD4
+#endif
+
+//
 // Steppers
 //
 #define X_STEP_PIN         PA9
   #endif
 
 #endif // HAS_SPI_LCD
+
+//
+// RGB LEDs
+//
+#ifndef RGB_LED_R_PIN
+  #define RGB_LED_R_PIN    PB5
+#endif
+#ifndef RGB_LED_G_PIN
+  #define RGB_LED_G_PIN    PB4
+#endif
+#ifndef RGB_LED_B_PIN
+  #define RGB_LED_B_PIN    PB3
+#endif
+#ifndef RGB_LED_W_PIN
+  #define RGB_LED_W_PIN    -1
+#endif