Add rgblight mode 35 (R,G,B test mode) (#3114)

* add rgblight mode 35 (RGB cyclic mode) into quantum/rgblight.c

* Update docs, add rgblight mode 35(RGB cyclic)

* rename RGBCYCLIC to RGBTEST

1 files changed, 3 insertions, 1 deletions

diff --git a/quantum/rgblight.h b/quantum/rgblight.h
index 569424506..e9c192a4e 100644
--- a/quantum/rgblight.h
+++ b/quantum/rgblight.h
@@ -17,7 +17,7 @@
 #define RGBLIGHT_H
 
 #ifdef RGBLIGHT_ANIMATIONS
-        #define RGBLIGHT_MODES 34
+        #define RGBLIGHT_MODES 35
 #else
         #define RGBLIGHT_MODES 1
 #endif
@@ -83,6 +83,7 @@ extern const uint8_t RGBLED_RAINBOW_MOOD_INTERVALS[3] PROGMEM;
 extern const uint8_t RGBLED_RAINBOW_SWIRL_INTERVALS[3] PROGMEM;
 extern const uint8_t RGBLED_SNAKE_INTERVALS[3] PROGMEM;
 extern const uint8_t RGBLED_KNIGHT_INTERVALS[3] PROGMEM;
+extern const uint16_t RGBLED_RGBTEST_INTERVALS[1] PROGMEM;
 
 typedef union {
   uint32_t raw;
@@ -160,5 +161,6 @@ void rgblight_effect_rainbow_swirl(uint8_t interval);
 void rgblight_effect_snake(uint8_t interval);
 void rgblight_effect_knight(uint8_t interval);
 void rgblight_effect_christmas(void);
+void rgblight_effect_rgbtest(void);
 
 #endif