Test support for esp devices

[thebino]

Let's check the efforts needed to add a sample or at least support for the esp framework from espressif.

There is a request here for support on top of the esp-ieee802154 crate.

Since this zigbee crate is planned as no_std it should be possible to archive.

[maufl]

I'd be interested to test this for my project :) https://github.com/maufl/sensor2