move yd60mq to ymdk vendor folder (#15647)

keyboards/ymdk/yd60mq/yd60mq.c

@@ -0,0 +1,21 @@
+#include "yd60mq.h"
+
+__attribute__((weak))
+void matrix_init_kb(void){
+    setPinOutput(F4);
+    writePinHigh(F4);
+}
+
+__attribute__((weak))
+bool led_update_kb(led_t led_state) {
+    bool res = led_update_user(led_state);
+    if (res) {
+        // writePin sets the pin high for 1 and low for 0.
+        // In this example the pins are inverted, setting
+        // it low/0 turns it on, and high/1 turns the LED off.
+        // This behavior depends on whether the LED is between the pin
+        // and VCC or the pin and GND.
+        writePin(F4, !led_state.caps_lock);
+    }
+    return res;
+}