feat(medusa): migrate medusa unit tests / plugins integration tests to swc jest

[riqwan]

what:

• migrates medusa package to swc/jest
• migrates plugins integration tests to swc/jest
• parallelises a few of the heavy test packages
• fixes typeorm circular dependencies

Unit Tests

Before: 1 job => ~30 mins
After: 2 jobs => ~5 mins

Plugins

Before: 1 job => ~10 mins
After: 1 job => ~5 mins

[changeset-bot]

🦋 Changeset detected

Latest commit: 360071d

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

This PR includes changesets to release 1 package

Name	Type
@medusajs/medusa	Patch

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[carlos-r-l-rodrigues]

• Circular dependencies (typeorm relations)

I haven't checked the full PR yet, but if you solved circular dependencies, does that mean we can finally use ES6 (Es2020) everywhere, including /medusa?

[adrien2p]

@olivermrbl the issues was the circular dependencies that we postponed long time ago as well as using var that are not yet declared. This pr tackle it.

@carlos-r-l-rodrigues yes in theory we should be able to if the package doesn't have circular or use of variables that are declared later

Edit: just saw riqwan message