Add `caffeine-coroutines` in README

[be-hase]

Hello. I always use Caffeine.

I have implemented a library called caffeine-coroutines, which adds Kotlin coroutines support to Caffeine. If possible, could you add this to the README?

There is also a Kotlin wrapper called Aedile, but for the following reasons, I prefer to provide extensions rather than a wrapper.

https://github.com/be-hase/caffeine-coroutines?tab=readme-ov-file#we-will-primarily-focus-on-coroutine-support

[CLAassistant]

All committers have signed the CLA.

[ben-manes]

Sure, but can you make the item length shorter and align into a triangular flow? It’s a bit wordy in comparison

[ben-manes]

thanks, merged in manually

[be-hase]

thanks. :)