[Keyboard] Add kudox keyboard (#6459)

* Add Kudox Keyboard profile.

* Modified info.json and image link on readme.

* Remove unnecessary codes.

* Set BootLoader caterina.

* Remove duplicated settings on rules.mk.

* Clean up config.h.

* Modified include header path.

* Modified info.json to adjust 4th row keys y position.

* Separate default keymap and my keymap.

* Modified RGB_LED_* settings on kudox/rev1/config.h.

keyboards/kudox/rev1/rev1.c

@@ -0,0 +1,22 @@
+#include "kudox.h"
+
+
+#ifdef SSD1306OLED
+void led_set_kb(uint8_t usb_led) {
+    // put your keyboard LED indicator (ex: Caps Lock LED) toggling code here
+    led_set_user(usb_led);
+}
+#endif
+
+void matrix_init_kb(void) {
+
+    // // green led on
+    // DDRD |= (1<<5);
+    // PORTD &= ~(1<<5);
+
+    // // orange led on
+    // DDRB |= (1<<0);
+    // PORTB &= ~(1<<0);
+
+	matrix_init_user();
+};