examples: Add friend module to examples.

This commit adds a chatbot example program.  The goal is to help educators
customize a chatbot for their teaching needs in addition to students having
an interactive chatbot to communicate with.

examples/friend.py

@@ -0,0 +1,87 @@
+"""
+Friend Module for the micro:bit
+
+The Friend module is a chatbot that you can run inside
+of the REPL by typing the following for example.
+>>> from friend import *
+>>> talk('What is your name?')
+
+*** Requires an external speaker.  For more information please
+*** visit https://github.com/mytechnotalent/MicroPython-micro-bit_Friend_MOD
+"""
+
+import gc
+
+import speech
+
+
+def talk(words):
+    """Talk to your friend Mr. George
+
+    Parameters
+    ----------
+    words : str
+        The words to say to your friend Mr. George
+    Returns
+    -------
+    None
+    """
+    gc.collect()
+    words = words.lower()
+
+    if words.find("how are you") != -1:
+        speech.say("I am doing great!")
+    elif words.find("what's up") != -1:
+        speech.say("The sky.")
+    elif words.find("morning") != -1:
+        speech.say("I love to watch the sun rise in the morning!")
+    elif words.find("afternoon") != -1:
+        speech.say("I get hungry around lunch time.")
+    elif words.find("evening") != -1:
+        speech.say("I get sleepy in the evening.")
+    elif words.find("night") != -1:
+        speech.say("I get sleepy when it is night time.")
+    elif words.find("tell me something") != -1:
+        speech.say("I am a robot who loves to teach Piethon.")
+    elif words.find("hello") != -1:
+        speech.say("Hello to you!")
+    elif words.find("hi") != -1:
+        speech.say("Hi to you!")
+    elif words.find("thank you") != -1:
+        speech.say("It is my pleasure!")
+    elif words.find("bye") != -1:
+        speech.say("It was nice talking to you!")
+    elif words.find("help") != -1:
+        speech.say("I am always here to help!")
+    elif words.find("what can you do") != -1:
+        speech.say("I can teach Piethon programming.")
+    elif words.find("name") != -1:
+        speech.say("My name is Mr. George it is nice to meet you!")
+    elif words.find("how old are you") != -1:
+        speech.say("I was born in September of the year twenty twenty.")
+    elif words.find("question") != -1:
+        speech.say("I always try to answer questions.")
+    elif words.find("joke") != -1:
+        speech.say("What did the chicken cross the road?")
+        speech.say("To get to the other side.")
+    elif words.find("love") != -1:
+        speech.say("I love pizza!")
+    elif words.find("love you") != -1:
+        speech.say("Thank you so kind of you!")
+    elif words.find("love people") != -1:
+        speech.say("I want to help people by teaching them Piethon!")
+    elif words.find("hobby") != -1:
+        speech.say("I like to teachin Piethon to people!")
+    elif words.find("you live") != -1:
+        speech.say("I live in side the little microcontroller here.")
+    elif words.find("made you") != -1:
+        speech.say(
+            "Kevin Thomas created me inspired by the great people at MicroPiethon."
+        )
+    elif words.find("your job") != -1:
+        speech.say("I teach Piethon.")
+    elif words.find("you do") != -1:
+        speech.say("I like to teach Piethon.")
+    # ADD MORE CODE HERE
+    else:
+        speech.say("I am sorry I do not understand.")