Add a list of neovim plugins using nvim-oxi in the README.

[miroshQa]

I think it would be cool to add a list of plugins using nvmi-oxi in the README; it can really help people who want to try it. I found silicon.nvim; are there any others?

[noib3]

Like this one?

[miroshQa]

Cool! Didn't know about that!