feat(medusa-react,medusa,utils): add users/me endpoint + add missing specs (#6441)

**what:**

- adds /me endpoint
- adds fixes to routes
- adds specs for auth endpoint
- updates dotenv package versions


Co-authored-by: Philip Korsholm <88927411+pKorsholm@users.noreply.github.com>

packages/user/package.json

@@ -55,7 +55,7 @@
     "@mikro-orm/migrations": "5.9.7",
     "@mikro-orm/postgresql": "5.9.7",
     "awilix": "^8.0.0",
-    "dotenv": "16.3.1",
+    "dotenv": "16.4.5",
     "jsonwebtoken": "^9.0.2",
     "knex": "2.4.2"
   }