RGB fix

small RGB touchup

convert boards to extensions

kmk/boards/nice_nano/crkbd.py

@@ -1,5 +1,8 @@
 import board
 
+from kmk.extensions.layers import Layers
+from kmk.extensions.rgb import RGB
+from kmk.extensions.split import Split
 from kmk.kmk_keyboard import KMKKeyboard as _KMKKeyboard
 from kmk.matrix import DiodeOrientation
 from kmk.matrix import intify_coordinate as ic
@@ -31,3 +34,8 @@ class KMKKeyboard(_KMKKeyboard):
 
     # And now, to handle R3, which at this point is down to just six keys
     coord_mapping.extend(ic(3, x) for x in range(3, 9))
+
+    rgb_ext = RGB(pixel_pin=rgb_pixel_pin, num_pixels=12)
+    layers_ext = Layers()
+    split = Split(uart_pin=uart_pin, split_offsets=split_offsets)
+    extensions = [rgb_ext, split, layers_ext]