Automatic overlay loader

[jimbuck]

Create an overlay loader to check the filesystem and load it automatically on start.

This will make it way easier to add new overlays, or even add them locally (without having to fork the project).

Most likely this will be achieved by scanning a specified folder for subfolders with an overlay.json file. The JSON file will contain the overlay's display name, author, and list of files to load. Additionally this will require hotkey specifications (combo mapped to the command) as well as how settings should be handled.

[jimbuck]

How should settings be handled?

• Where to store the saved settings? (project.json, appData, etc)
• How should a settings window be rendered? (data-driven form, custom page, etc?)
• How will the settings page integrate with the other processes?