Add wiznet ssl example

This requires adafruit/circuitpython#8954
and adafruit/Adafruit_CircuitPython_Wiznet5k#157

Author: jepler

examples/wiznet5k/requests_wiznet5k_ssl_simpletest.py

@@ -0,0 +1,70 @@
+# SPDX-FileCopyrightText: 2021 ladyada for Adafruit Industries
+# SPDX-License-Identifier: MIT
+
+import adafruit_connection_manager
+import board
+import busio
+from adafruit_wiznet5k.adafruit_wiznet5k import WIZNET5K
+from digitalio import DigitalInOut
+import ssl
+import adafruit_requests
+
+if hasattr(board, 'W5500_CS'):
+    # Wiznet W5500-EVB-Pico
+    cs = DigitalInOut(board.W5500_CS)
+    reset = DigitalInOut(board.W5500_RST)
+else:
+    # Adafruit Ethernet Featherwing
+    cs = DigitalInOut(board.D10)
+    reset = None
+
+spi_bus = busio.SPI(board.SCK, MOSI=board.MOSI, MISO=board.MISO)
+
+# Initialize ethernet interface with DHCP
+radio = WIZNET5K(spi_bus, cs, reset=reset)
+
+# Initialize a requests session
+pool = adafruit_connection_manager.get_radio_socketpool(radio)
+ssl_context = ssl.create_default_context()
+requests = adafruit_requests.Session(pool, ssl_context)
+
+TEXT_URL = "http://wifitest.adafruit.com/testwifi/index.html"
+JSON_GET_URL = "http://httpbin.org/get"
+JSON_GET_URL = "https://httpbin.org/get"
+JSON_POST_URL = "https://httpbin.org/post"
+
+if __name__ == '__main__':
+    print("Fetching text from %s" % TEXT_URL)
+    with requests.get(TEXT_URL) as response:
+        print("-" * 40)
+
+        print("Text Response: ", response.text)
+        print("-" * 40)
+
+    print("Fetching JSON data from %s" % JSON_GET_URL)
+    with requests.get(JSON_GET_URL) as response:
+        print(response)
+        print("-" * 40)
+
+        print("JSON Response: ", response.json())
+        print("-" * 40)
+
+    data = "31F"
+    print("POSTing data to {0}: {1}".format(JSON_POST_URL, data))
+    with requests.post(JSON_POST_URL, data=data) as response:
+        print("-" * 40)
+
+        json_resp = response.json()
+        # Parse out the 'data' key from json_resp dict.
+        print("Data received from server:", json_resp["data"])
+        print("-" * 40)
+
+    json_data = {"Date": "July 25, 2019"}
+    print("POSTing data to {0}: {1}".format(JSON_POST_URL, json_data))
+    with requests.post(JSON_POST_URL, json=json_data) as response:
+        print("-" * 40)
+
+        json_resp = response.json()
+        # Parse out the 'json' key from json_resp dict.
+        print("JSON Data received from server:", json_resp["json"])
+        print("-" * 40)