update main.py to allow dynamic selection of keyboard implementation based on 'settings.toml' config

ardux/hardware/quagboard.py

@@ -0,0 +1,12 @@
+from ardux.kb import _ArduxKeyboard
+from kmk.scanners import DiodeOrientation
+
+# Quagboard Implementation
+class QuagboardArduxKeyboard(_ArduxKeyboard):
+    def setup_physical_config(self):
+        self.diode_orientation = DiodeOrientation.COL2ROW
+        self.row_pins = (board.GP0,)
+        #right hand pins
+        #self.col_pins = (board.GP1, board.GP2, board.GP3, board.GP4, board.GP5, board.GP6, board.GP7, board.GP8 , board.GP10 , board.GP9)
+        #left hand pins
+        self.col_pins = (board.GP4, board.GP3, board.GP2, board.GP1, board.GP8, board.GP7, board.GP6, board.GP5 , board.GP9 , board.GP10)

main.py

@@ -3,8 +3,15 @@ import os
 
 #####
 # Main keyboard object
-from ardux.hardware.thepaintbrush import ThePaintbrushArduxKeyboard
-ardux_keyboard = ThePaintbrushArduxKeyboard()
+ardux_board = os.getenv('ARDUX_BOARD')
+if ardux_board == 'thepaintbrush':
+    from ardux.hardware.thepaintbrush import ThePaintbrushArduxKeyboard
+    ardux_keyboard = ThePaintbrushArduxKeyboard()
+elif ardux_board == 'quagboard':
+    from ardux.hardware.quagboard import QuagboardArduxKeyboard
+    ardux_keyboard = QuagboardArduxKeyboard()
+else:
+    raise NotImplementedError('Please configure the proper keyboard in "settings.toml"')
 
 #####
 # NeoPixel on kb2040 (tune accordingly / remove if different mcu)