Add initial scripts for LED control and network scanning

blink_onboard_led.py

@@ -0,0 +1,8 @@
+from machine import Pin, Timer
+led = machine.Pin("LED", machine.Pin.OUT)
+timer = Timer()
+
+def blink(timer):
+    led.toggle()
+
+timer.init(freq=2.5, mode=Timer.PERIODIC, callback=blink)