Added support for sunset/sunrise

[paviro]

This tries to solve #40. I don't 100% understand your code (totally my issue :D) so please correct me if I missed anything.

I am not 100% sure if there are any changes needed to for example:

if await self.now_is_between(str(dt_start), str(next_dt_start)):
                await self.switch_daytime(dict(daytime=daytime, initial=True))
                self.active_daytime = daytime.get("daytime")

Because of the change from time.fromisoformat to self.parse_time. In my tests I got the same data back and I haven't run into any issues yet.

[paviro]

Not sure why linting failed now 🙃

[benleb]

Thanks!

[tjedrak]

@benleb can you release it? I can't see the updated version in HACS