added micropython firmware and setup for webrepl over wifi

micropython_firmware/boot.py

@@ -0,0 +1,14 @@
+import network
+import time
+
+# connect to local wifi network
+sta_if = network.WLAN(network.STA_IF)
+sta_if.active(True)
+# TODO: edit this line
+sta_if.connect("<SSID>", "<PASSWORD>")
+sta_if.ifconfig()
+
+# start terminal over wifi
+time.sleep(5)  # wait for wifi to connect
+import webrepl
+webrepl.start()

micropython_firmware/main.py

@@ -0,0 +1 @@
+# empty file