Please add cl-setlocale

https://github.com/shamazmazum/cl-setlocale

`cl-setlocale` is a tiny wrapper around `setlocale(3)`.

It can be used to affect behavior of other bindings to C libraries. For example, you can use it with `cl-charms` to enable UTF-8 input and output like so:
~~~~
(cl-setlocale:set-all-to-native)
(charms/ll:initscr)
~~~~