Yarn PnP Support

[rwjblue]

Part of ember-cli PnP meta issue (https://github.com/ember-cli/ember-cli/issues/8164).

We need to update this code (and any other that uses resolve.sync):

https://github.com/quaertym/ember-cli-dependency-checker/blob/b41dc3440a5a29fdb511fd93cc3a594f826eb8fc/lib/dependency-checker.js#L91

We can do either of the following:

• Wait for https://github.com/browserify/resolve/pull/170 to land, bump the version here, and pass useProcessResolution to the resolve.sync call.
• Update to use this.project.resolveSync (and assume that ember-cli will address as part of https://github.com/ember-cli/ember-cli/issues/8164).

I would suggest swapping to this.project.resolveSync since it works for older ember-cli versions and allows us to move forward immediately...

[rwjblue]

ember-cli-dependency-checker 3.1.0 published 🎉