chore: initial import
Extracted from my dotfiles:
https://github.com/wincent/wincent/tree/
63ae5ac88edac5ab877737bd964af09983ea1bc6/vendor/base16-templates/base16-nvim
This is a port to Lua of base16-vim:
https://github.com/chriskempson/base16-vim
As this is a heavily derivative work, I've preserved the original
copyright notice in the LICENSE.md.