Add a clueboard rev3 (#1688)

* Allow the knight animation to be restricted to a portion of the LED strip

* Add keys for jumping directly to particular animation modes

* Remove orphaned break statements

* Tweak the `RGB_MODE` buttons so they cycle through the same mode.

* small indentation fix

* Add a new revision of the clueboard with 18 underlight LEDs

keyboards/clueboard/rev3/config.h

@@ -0,0 +1,46 @@
+#ifndef REV3_CONFIG_H
+#define REV3_CONFIG_H
+
+#include "../config.h"
+
+#define PRODUCT_ID      0x2370
+#define DEVICE_VER      0x0001
+
+/* key matrix size */
+#define MATRIX_ROWS 10
+#define MATRIX_COLS 8
+
+// ROWS: Top to bottom, COLS: Left to right
+/* Row pin configuration
+* row: 0  1  2  3  4  5  6  7  8  9
+* pin: B2 C7 C6 B6 B5 B0 B3 D5 D3 D2
+*/
+#define MATRIX_ROW_PINS { B2, C7, C6, B6, B5, B0, B3, D5, D3, D2 }
+/* Column pin configuration
+ * col: 0  1  2  3  4  5  6  7
+ * pin: F0 F1 F4 F5 F6 F7 E6 B1
+ */
+#define MATRIX_COL_PINS { F0, F1, F4, F5, F6, F7, E6, B1 }
+#define UNUSED_PINS
+
+ /* Backlight configuration
+ */
+#define BACKLIGHT_LEVELS 1
+
+/* Underlight configuration
+ */
+#define RGB_DI_PIN D7
+#define RGBLED_NUM 18     // Number of LEDs
+#define RGBLIGHT_HUE_STEP 32
+#define RGBLIGHT_SAT_STEP 17
+#define RGBLIGHT_VAL_STEP 17
+
+#define RGBLIGHT_ANIMATIONS
+#define RGBLIGHT_EFFECT_CHRISTMAS_INTERVAL 666*2
+#define RGBLIGHT_EFFECT_CHRISTMAS_STEP 1
+#define RGBLIGHT_EFFECT_KNIGHT_LENGTH 3   // How many LEDs wide to light up
+#define RGBLIGHT_EFFECT_KNIGHT_OFFSET 2   // The led to start at
+#define RGBLIGHT_EFFECT_KNIGHT_LED_NUM 5  // How many LEDs to travel
+#define RGBLIGHT_EFFECT_SNAKE_LENGTH 4    // How many LEDs wide to light up
+
+#endif