Get rid of oh-my-zsh

[TheKnarf]

While I do like oh-my-zsh its a bit "bloated". It ships with several hundred themes, and a bunch of plugins I don't use. It might be better to somehow export the one theme I use as well as the plugins I want and use them directly.

I could look into using something like zplugin, zgen, or antigen. But I do think that just using git-submodules might be just as well. However, maybe I'd like to create a tool for easier working with git-submodules? Maybe it would even replace my current use of dotbot as a symlink and setup tool. We'll have to explore this option some more.