Delete a streaming audit event header

Overview

Once it is possible to create a streaming audit event HTTP header, it should be possible to delete the same header via the GraphQL API.

Proposal

• Create a GraphQL mutation to delete a streaming audit event HTTP header.

mutation {
  externalAuditEventDestinationHeaderDestroy(input: { headerID: "gid://id/to/header" } ) {
    errors
  }
}