new handwired keyboard - Dactyl Manuform (#2516)

* adding new handwired keyboard: dactyl-manuform

* adding qwerty layout

* updating readme file.

keyboards/handwired/dactyl_manuform/dactyl_manuform.c

@@ -0,0 +1,23 @@
+#include "dactyl_manuform.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();
+};
+