[Keyboard] Update rocketboard_16 with *most* of its final features (#12537)

keyboards/rocketboard_16/config.h

@@ -45,12 +45,12 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #define RGBLIGHT_ANIMATIONS
 #define RGB_DI_PIN A4
 #define RGBLED_NUM 16
-#define RGBLIGHT_LIMIT_VAL 128
 #define RGBLIGHT_VAL_STEP 8
 #define RGBLIGHT_SLEEP
 
 // OLED stuff
 #define OLED_DISPLAY_128X64
+#define OLED_FONT_H "custom_font.h"
 
 // Allows for rotary encoder volume control
 #define TAP_CODE_DELAY 20