refactor: restructure plugin layout for better separation

[joshtym]

What Changed

Taking a stab at #20 by splitting the configuration into 4 primary components: common, legacy, modern and types

Why

See issue for the why

Todo:

• [ ] Add tests
• [ ] Add docs
• [ ] Add yourself to contributors (run yarn all-contributors add [name] [type]) see https://github.com/all-contributors/all-contributors/blob/master/docs/cli/usage.md

[tylerkrupicka]

Hey @joshtym, I took a glance at this and it looks great! I'll do a more thorough review soon. Thanks for contributing!

[joshtym]

This looks good to me! Can you fix the conflicts and then ill work on getting this in?

Done!

[hipstersmoothie]

:rocket: PR was released in v2.2.1 :rocket:

[tylerkrupicka]

Thanks for the contribution @joshtym!