move boards out of kmk

boards/converter/keebio/bdn9.py

@@ -0,0 +1,26 @@
+import board
+
+from kmk.extensions.layers import Layers
+from kmk.extensions.rgb import RGB
+from kmk.kmk_keyboard import KMKKeyboard as _KMKKeyboard
+from kmk.matrix import DiodeOrientation
+
+
+class KMKKeyboard(_KMKKeyboard):
+    col_pins = (
+        board.RX,
+        board.D13,
+        board.A0,
+        board.D11,
+        board.A4,
+        board.A5,
+        board.D10,
+        board.D9,
+        board.SCK,
+    )
+    diode_orientation = DiodeOrientation.COLUMNS
+    rgb_pixel_pin = board.TX
+
+    rgb_ext = RGB(pixel_pin=rgb_pixel_pin, num_pixels=9)
+    layers_ext = Layers()
+    extensions = [rgb_ext, layers_ext]