feat(medusa): migrate medusa unit tests / plugins integration tests to swc jest (#6820)

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


<img width="260" alt="Screenshot 2024-03-25 at 15 11 49" src="https://github.com/medusajs/medusa/assets/5105988/e1df6985-5bd6-48d0-b87b-336d3c77d0cf">

**Plugins**

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

<img width="254" alt="Screenshot 2024-03-25 at 15 26 03" src="https://github.com/medusajs/medusa/assets/5105988/c1cec0e2-a1c3-41d1-9372-46d114d804c6">



Co-authored-by: Adrien de Peretti <25098370+adrien2p@users.noreply.github.com>

yarn.lock

@@ -8488,6 +8488,8 @@ __metadata:
     "@medusajs/types": ^1.11.14
     "@medusajs/utils": ^1.11.7
     "@medusajs/workflows-sdk": ^0.1.4
+    "@swc/core": ^1.4.8
+    "@swc/jest": ^0.2.36
     "@types/express": ^4.17.17
     "@types/ioredis": ^4.28.10
     "@types/jsonwebtoken": ^8.5.9
@@ -32062,6 +32064,8 @@ __metadata:
     "@medusajs/user": "workspace:^"
     "@medusajs/utils": "workspace:^"
     "@medusajs/workflow-engine-inmemory": "workspace:*"
+    "@swc/core": ^1.4.8
+    "@swc/jest": ^0.2.36
     babel-preset-medusa-package: "*"
     faker: ^5.5.3
     jest: ^26.6.3