change the name to awesome-kotlin-multiplatform

[JotaPe]

To follow the trend of awesome lists on Github, would be nice to change and go to other awesome lists to put this list on them.

Nice Examples:
awesome-kotlin
awesome

[AAkira]

I created this repository two years ago when very few MPP libraries still existed.
So, some libraries that are not awesome are included.
But now, thanks to some contributors, we have awesome libraries!
If we rename this repository, I think I need to remove some unnecessary libraries.
How do you think?

[JotaPe]

I think would be awesome! If they are unnecessary instead of removing them add them to a new list or put them as "deprecated" state, just to preserve history.