* arlo: Add alarm control panel component
Allows importing arlo base stations as an alarm control panel
component in HA. Lets the users configure a custom home mode since
arlo does not have a built-in home mode.
* fix lint and houndci comments
* Use async_update to update the state
Move the state updating code from state() to update() since it does
I/O.
* Do not set state in __init__
Make sure that update is called by passing the second parameter to
async_add_devices.
* Order imports and fix dos-strings
Paulus Schoutsen
Fabian Affolter
Vignesh Venkat