Map Pack Project Saving #2
Description
When creating the Map Pack Project, the user should choose a directory in which to keep the map pack files.
Data such as MapLayouts (images for now, but could be just the map JSON files, see issue: #1) will be kept in the Map Pack Project directory.
If maps no longer generate images and only generate JSON files, put them all in separate folders.
Consider also how to elegantly export them into a map pack.