feat: Added automatic loading of Apps from the macropad_apps/python directory at load time.

Performance improvements to the lighting system.
Renamed app_router to macropad_os.

macropad_os/app_utils/key.py

@@ -0,0 +1,6 @@
+from adafruit_hid.keycode import Keycode
+
+class Key(object):
+    def __init__(self, name, keycode:Keycodes):
+        self.name = name
+        self.code = keycode