I had a plan for it a long time ago but it relied on me completing this: https://github.com/supertestnet/frightening-network

The regular lightning network doesn't let you create custom script outputs so I started creating my own, and a big part of why I started that was so that I could make a lightning version of my lottery. But then I got bored with remaking the lightning network so I moved on to other projects. I currently have no plans to finish the frightening network and consequently I have no plans to make a lightning version of the lottery contract.