Light and Deep Sleep

[oyvindnetland]

Im testing light and deep sleep for a battery powered device now, and seems to me that this is currently missing from esp-rs, at least from what I could tell.

Is this something that would be nice to add, if so, I can take a look at turning my experimentation into something generic.

I think this should be in this repo, agree?

If anybody have any ideas or strong opinion on what something like that should look like, please let me know.

[ivmarkov]

PR for light/deep sleep greatly appreciated! Please start simple, and then we can refine the PR with discussion / suggestions.
Note that the raw ESP IDF APIs for light/deep sleep are somewhat strange, so it might take a few iterations until we figure out how a good, safe API sahould look like.

[oyvindnetland]

Sounds like a plan