Support devices without HTTP API (such as Reolink Floodlight)

[kevin-david]

I know this would be a lot of work - but mostly wondering if you're open to a contribution if I find some time, and what approach would be acceptable.

As of today, this would require supporting the "Baichuan" protocol which is best understood by looking at this repo: https://github.com/QuantumEntangledAndy/neolink (and the one it's forked from) along with the blog post here: https://www.thirtythreeforty.net/posts/2020/05/hacking-reolink-cameras-for-fun-and-profit/

I took a stab at implementing this with the existing neolink tool here: https://github.com/QuantumEntangledAndy/neolink/pull/14. But it's still a bit of a mess.

More context and previous ideas I had here: https://github.com/fwestenberg/reolink_dev/issues/599#issuecomment-1345356470