Check if a provider exists.

Request

• Base URL
  / (relative, and the document was published on a file host, not at the API’s origin)
• Auth
  none declared
• TypeScript
  https://skmtc.dev/onroerenderfgoed/apis/atramhasis-api/docs/providers/:id/head.ts

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