reformatting the default_app structure and worked on options menu.

macropad_os/app_state.py

@@ -0,0 +1,12 @@
+class InvalidStateUpdateError(Exception):
+    pass
+
+
+class AppState(object):
+    STARTING = "starting"
+    RESUMING = "resuming"
+    RUNNING = "running"
+    PAUSING = "pausing"
+    PAUSED = "paused"
+    STOPPING = "stopping"
+    STOPPED = "stopped"