Does it have to be a Nanoleaf lightstrip? There are lots out there, many of which already work with openHAB. That’s the beauty of OH: you don’t have to stick to one vendor and/or communication protocol.
If you’re set on this particular, you can try out this very proof of concept for Matter. Note that you’d need to approach it from the perspective of wanting to help test the solution for future inclusion in openHAB.
I believe you’ll still need to have a Matter border router (e.g. a Google Nest Hub) to handle the Thread communication.
