Split up pins to make it more manageable

Hopefully this is helpful to organization and future expansion….

Marlin/pins_3DRAG.h

@@ -0,0 +1,39 @@
+/**
+ * 3DRAG (and K8200) Arduino Mega with RAMPS v1.3 pin assignments
+ */
+
+#include "pins_RAMPS_13.h"
+
+#define X_MAX_PIN           -1   //2 //Max endstops default to disabled "-1", set to commented value to enable.
+
+#define Y_MAX_PIN          -1   //15
+
+#define Z_MAX_PIN          -1
+
+#define SDSS               25//53
+
+#define BEEPER             33
+
+#define FAN_PIN            8
+
+#define HEATER_0_PIN       10
+#define HEATER_1_PIN       12
+#define HEATER_2_PIN       6
+
+#define HEATER_BED_PIN     9    // BED
+
+#if defined(ULTRA_LCD) && defined(NEWPANEL)
+  #define BEEPER -1
+
+  #define LCD_PINS_RS 27
+  #define LCD_PINS_ENABLE 29
+  #define LCD_PINS_D4 37
+  #define LCD_PINS_D5 35
+  #define LCD_PINS_D6 33
+  #define LCD_PINS_D7 31
+
+  // Buttons
+  #define BTN_EN1 16
+  #define BTN_EN2 17
+  #define BTN_ENC 23 //the click
+#endif // ULTRA_LCD && NEWPANEL