Create a new website backend.

Request

• The document declares no server URL.
• Auth
  • API key in header X-Api-Key
  • or API key in header X-Admin-Auth-Token
• TypeScript
  https://skmtc.dev/gsa/apis/api-umbrella-admin-api/docs/api-umbrella/v1/website_backends/post.ts

  A function with typed inputs. Its response is checked against the schema.