boards/anavi/knob1: Simplify the source code

Optimize and simplify the source code by using the full potential
of class EncoderHandler.

Signed-off-by: Leon Anavi <leon.anavi@konsulko.com>

boards/anavi/knob1/code.py

@@ -1,18 +1,26 @@
 import board
 
-from anaviknob import AnaviKnob
-
+from kmk.extensions.media_keys import MediaKeys
 from kmk.extensions.RGB import RGB, AnimationModes
 from kmk.keys import KC
+from kmk.kmk_keyboard import KMKKeyboard
 from kmk.modules.encoder import EncoderHandler
+from kmk.scanners.keypad import KeysScanner
 
+knob = KMKKeyboard()
+knob.matrix = KeysScanner([])
+
+media_keys = MediaKeys()
+knob.extensions.append(media_keys)
+
+# Rotary encoder that also acts as a key
 encoder_handler = EncoderHandler()
-encoder_handler.pins = ((board.D1, board.D2, None, False),)
-encoder_handler.map = (((KC.VOLD, KC.VOLU),),)  # base layer
-
-knob = AnaviKnob()
+encoder_handler.pins = ((board.D1, board.D2, board.D0),)
+encoder_handler.map = (((KC.VOLD, KC.VOLU, KC.MUTE),),)
 knob.modules.append(encoder_handler)
 
+print('ANAVI Knob 1')
+
 rgb_ext = RGB(
     pixel_pin=board.NEOPIXEL,
     num_pixels=1,