Fix a buggy startup error - delay before dbussy

The app sometimes exits immediately with a segfault. This reference
suggests it is a startup race condition in dbussy:

ldo/dbussy#15 (comment)

comitup_watch/devicemon.py

@@ -35,6 +35,9 @@ def __init__(self, bus, event_queue):
  super().__init__(bus)
 
  async def startup(self) -> None:
+
+ await asyncio.sleep(0.1)
+
  for devpath in await self.GetAllDevices():
  # print(devpath)
  await self.add_dev_path(devpath)
@@ -59,8 +62,6 @@ async def startup(self) -> None:
 
  async def add_dev_path(self, path):
 
- # print("Added device path", path)
-
  if str(path) not in self.dev_paths:
  self.dev_paths |= set(str(path))
 
@@ -82,8 +83,6 @@ async def add_dev_path(self, path):
 
  @ravel.signal(name="DeviceAdded", in_signature="o")
  async def device_added_signal(self, path):
- # print(path)
-
  # print("strpath", path)
  await self.add_dev_path(path)