[Renderers/Terminal] NCurses terminal renderer

[phyxl]

This builds on the work of @EmmanuelMess https://github.com/nicbarker/clay/pull/91/commits/7ce74ba46c01f32e4517032e9da76bf54ecf7a43

See the readme for more info, but this pull-request is for a terminal only renderer which utilizes ncurses which is found on nearly every linux distribution already

[EmmanuelMess]

I would keep the ncurses renderer separate from the ANSI escape code based one.

[nicbarker]

Hello, now that I've merged the basic ANSI terminal renderer example in https://github.com/nicbarker/clay/pull/91, I will get to this one next 🙂