[miio] Cloud Communication for devices (#8981)

[miio]  Cloud Communication for devices (#8981)

* [miio]  Cloud Communication for devices

Allows to define if communication to devices is direct or send via the
Xiaomi cloud.
Introduce additional channel to execute commands via cloud.

Other small improvements
* Use common method from abstract handler to send commands
* Common way to handle custom commands
* Introduce small delay before refreshing robot properties after sending
commands (similar to the basic handler) so devices have time to update
their properties

* [miio] simplify cloudconnector
* [miio] Cleanup all jobs when unloading
* [miio] update to use dedicated ScheduledExecutorService

Use dedicated ScheduledExecutorService to avoid unloading problems

* Update bundles/org.openhab.binding.miio/src/main/java/org/openhab/binding/miio/internal/handler/MiIoAbstractHandler.java
* [miio] fix for removeif
* miio- Improve scheduler
* [miio] fix communication error if device is not on the network
* [miio] update with comments from feedback

* remove scheduler tracking
* improve status setting for cloud communication
* [miio] update with feedback review

Signed-off-by: Marcel Verpaalen <marcel@verpaalen.com>
Co-authored-by: Connor Petty <mistercpp2000@gmail.com>