Retrieve plans

curl --request GET \
  --url https://api.spacebring.com/plans/v1 \
  --header 'Authorization: Basic <encoded-value>'

{
  "plans": [
    {
      "createDate": "2023-11-07T05:31:56Z",
      "credits": 123,
      "customTax": {
        "enabled": true,
        "rate": 123
      },
      "dayPasses": 123,
      "description": "<string>",
      "id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
      "locationRef": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
      "period": "day",
      "price": 123,
      "selfSignup": {
        "enabled": true,
        "type": "immediate"
      },
      "title": "<string>"
    }
  ]
}