[amazonechocontrol] Add do not disturb channel

[ccutrer]

This is a port of smarthomej/addons#391 that I've been using for years, but I hear the main distro version of the binding should be functional again, and I'd rather not have to wait for it to become compatible after a new core release each time again.

[J-N-K]

I would prefer if you backport all changes. I just don't have time for that at the Moment. I can help if Problems occur.

[ccutrer]

Sure, I can help you with that. I still need to test my other use cases besides DnD. I'll work on the rest of them over the next two weeks. Do you prefer if I stuff it all into a single PR, or do PR per "topic" that happened in smarthomej?

Tangentially- what are your plans for the Tuya binding? I'd be happy to work on porting that into the main distro as well.

[J-N-K]

@ccutrer I think that it would be better to do single PR because some of the PR had issues that were later fixed together in another PR. What I did when backporting other changes is to just replace the openhab version with the smarthomej version, rename the directory, do a search&replace for org.smarthomej and then check fi something unwanted was reverted.

[J-N-K]

Regarding Tuya: fine with me.