Implement Supervisor API for home-assistant/os-agent#238, adding possibility to
schedule migration either to Containerd overlayfs driver, or migration to the
graph overlay2 driver, once the device is rebooted the next time. While it's
technically in the DBus OS interface, in Supervisor's abstraction it makes more
sense to put it under `/docker` endpoints.
WipeDevice method was dropped from OS Agent code in [1]. Remove it from
the mock class to sync with the current API. There is no usage of
WipeDevice in the Supervisor codebase, only ScheduleWipeDevice is
called.
[1] https://github.com/home-assistant/os-agent/pull/225
* Migrate to Ruff for lint and format
* Fix pylint issues
* DBus property sets into normal awaitable methods
* Fix tests relying on separate tasks in connect
* Fixes from feedback
