Refactor auto-generated schemas and types formatting

Updated the formatting for auto-generated schemas, types, and related files to adhere to consistent coding standards (e.g., double quotes, indentation). No functional changes were made, ensuring behavior remains identical.

frontend/package.json

@@ -9,6 +9,7 @@
     "lint": "next lint",
     "docker:build": "docker build -t eventspace-frontend .",
     "docker:run": "docker run -p 3000:3000 eventspace-frontend",
+    "format": "prettier --write .",
     "openapi-ts": "openapi-ts"
   },
   "dependencies": {
@@ -30,7 +31,10 @@
     "@types/react-dom": "^19",
     "eslint": "^9",
     "eslint-config-next": "15.2.0",
+    "eslint-config-prettier": "^10.0.2",
+    "eslint-plugin-prettier": "^5.2.3",
     "openapi-typescript-codegen": "^0.29.0",
+    "prettier": "^3.5.3",
     "tailwindcss": "^4",
     "typescript": "^5"
   }