Keyboard: Add HelixPico keyboard (#3502)

keyboards/helix/pico/pico.c

@@ -0,0 +1,14 @@
+#include "helix.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) {
+
+	matrix_init_user();
+};