adding ethernet example

examples/httpserver_ethernet_simpletest.py

@@ -0,0 +1,36 @@
+# SPDX-FileCopyrightText: 2023 Tim C for Adafruit Industries
+# SPDX-License-Identifier: MIT
+
+import board
+import digitalio
+from adafruit_wiznet5k.adafruit_wiznet5k import WIZNET5K
+import adafruit_wiznet5k.adafruit_wiznet5k_socket as socket
+from adafruit_httpserver import Server, Request, Response
+
+print("Wiznet5k HTTPServer Test")
+
+# For Adafruit Ethernet FeatherWing
+cs = digitalio.DigitalInOut(board.D10)
+# For Particle Ethernet FeatherWing
+# cs = digitalio.DigitalInOut(board.D5)
+spi_bus = board.SPI()
+
+# Initialize ethernet interface with DHCP
+eth = WIZNET5K(spi_bus, cs)
+
+# set the interface on the socket source
+socket.set_interface(eth)
+
+# initialize the server
+server = Server(socket, "/static", debug=True)
+
+
+@server.route("/")
+def base(request: Request):
+    """
+    Serve a default static plain text message.
+    """
+    return Response(request, "Hello from the CircuitPython HTTP Server!")
+
+
+server.serve_forever(str(eth.pretty_ip(eth.ip_address)))