List available billing plans

[  {    "type": "none",    "name": "string",    "price": 0.1,    "annualPrice": 0.1,    "annualMonthlyPrice": 0.1,    "annualDiscountRate": 0.1,    "enableApi": true,    "storageLimitBytes": 0,    "monthlyTransferLimitBytes": 0,    "maxUploadSizeBytes": 0,    "maxStores": 0,    "maxMembers": 0,    "maxProducts": 0,    "maxCategories": 0,    "maxBrands": 0,    "maxAttributes": 0,    "maxCollections": 0,    "monthlyAiCreditAllowance": 0,    "activityLogRetentionDays": 0,    "webhookSuccessRetentionDays": 0,    "webhookFailedRetentionDays": 0  }]