PicoWireless: network scan example

Basic example to scan SSID networks and list them.

micropython/examples/pico_wireless/scan_networks.py

@@ -0,0 +1,15 @@
+import picowireless
+import time
+
+picowireless.init()
+
+picowireless.start_scan_networks()
+
+while True:
+    networks = picowireless.get_scan_networks()
+    print("Found {} network(s)...".format(networks))
+    for network in range(networks):
+        ssid = picowireless.get_ssid_networks(network)
+        print("{}: {}".format(network, ssid))
+    print("\n")
+    time.sleep(10)