Offering to maintain Kint

Hi. I'm the kint developer (The original library/tool, not the module)

Since devel integrated kint years ago this project has been effectively dead since D7.

After a recent internals rewrite I made some performance tweaks and a plugin to improve devel's kint support, but devel is removing kint entirely in favor of step debugging.

I'd like to write a new version of this module for D10/11. It'd set some sane default configs to optimize dumps and add a replacement DevelDumperInterface for devel users.

The rough gist of it is visible in this commit (Though I'd refactor it when making a fully-fledged module)