Add Hello World script with audio and NeoPixel

Implement a Hello World program with audio and NeoPixel support.

Author: TheKitty

Crickits/Crickit_Hello_World/code.py

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+# SPDX-FileCopyrightText: 2018 Anne Barela for Adafruit Industries
+#
+# SPDX-License-Identifier: MIT
+
+import time
+import audioio
+import audiocore
+import board
+import neopixel
+from adafruit_crickit import crickit
+
+# Set audio out on speaker
+speaker = audioio.AudioOut(board.A0)
+
+# Start playing the file (in the background)
+def play_file(wavfile):
+    audio_file = open(wavfile, "rb")
+    wav = audiocore.WaveFile(audio_file)
+    speaker.play(wav)
+    while speaker.playing:
+        pass
+
+# NeoPixels on the Circuit Playground Express Light Blue
+pixels = neopixel.NeoPixel(board.NEOPIXEL, 10, brightness=0.3)
+# Fill them with our favorite color "#0099FF light blue" -> 0x0099FF
+# (see http://www.color-hex.com/ for more colors and find your fav!)
+pixels.fill(0x0099FF)
+
+while True:
+    print("Hello world!")
+    play_file("hello.wav")       # play Hello World WAV file
+    crickit.servo_1.angle = 75   # Set servo angle to 75 degrees
+    time.sleep(1.0)              # do nothing for a 1 second
+    crickit.servo_1.angle = 135  # Set servo angle to 135 degrees
+    time.sleep(1.0)              # do nothing for a 1 second