Implement "extract-tests" and enable multi-phase migrations so that reviewers *can* know what's going on with v2 conversions

[NullVoxPopuli]

title

[changeset-bot[bot]]

🦋 Changeset detected

Latest commit: c55aeea9ef9d11e4debc7fe151c088c679b99024

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 1 package

| Name | Type | | -------------------- | ----- | | ember-addon-migrator | Minor |

Not sure what this means? Click here to learn what changesets are.

Click here if you're a maintainer who wants to add another changeset to this PR