• cleanup for Automatically update AllPackages bundle when regenerating snapshots #123

While working on the above PR, I had to shift some stuff around so I decided that it would be better to do some refactoring beforehand to get everything that I wanted into place.

In this change, I do the following:

1. Introduce a new Snapshotter class that replaces the old compare(expected:actual:) global function.
2. Move test helpers (TemporaryDirectory) into Helpers directory
3. Remove generated snapshots, test specs and AllPackages out of ./Tests/CreateAPITests and into a new ./Tests/Support directory
   • I wasn't a big fan on having to manage excludes to keep the files from being compiled etc.
4. Move the GenerateTestCase.SpecFixture type into its own file at ./Helpers/SpecFixture.swift now that we have some room to breathe with helpers

Before	After