Micro theme: Create a plugin

[JPeisach]

There is a built-in plugin system for Micro with an official channel to post to via a PR. Then it can be installed through Micro. This would allow for better distribution outside of Ubuntu.

There are two files: a 'repo.json' file, simple enough, and a Lua file to sync everything together and connect the plugin to Micro (In our case, to load it)