chore: Centralise ESLint rules (#2162)

* chore: centrilize eslint rules

packages/medusa/package.json

@@ -24,11 +24,9 @@
     "@types/multer": "^1.4.7",
     "babel-preset-medusa-package": "^1.1.19",
     "cross-env": "^5.2.1",
-    "eslint": "^7.32.0",
     "jest": "^25.5.2",
     "medusa-interfaces": "^1.3.3",
     "nodemon": "^2.0.1",
-    "prettier": "^1.19.1",
     "sqlite3": "^5.0.2",
     "supertest": "^4.0.2",
     "ts-jest": "^25.5.1",