add filter:api.user.signup.requires-approval.result

[kontrollanten]

Description

• Deprecate POST /registrations/request endpoint and instead use POST /register for all type of registrations.
• POST /register now returns 200 (previously 204) and always returns { state: { id: number, label: string } } (both for direct and request registrations). The state will tell the client whether it became a direct registration or not.
• Add filter:api.user.signup.requires-approval.result.

Example:

  registerHook({
    target: 'filter:api.user.signup.requires-approval.result',
    handler: ({ requiresApproval, registrationReason }, { body, headers }) => {
      return {
        requiresApproval: true,
        registrationReason: 'Marked as spam'
      }
    }
  })

Related issues

closes #6691

Has this been tested?

• 👍 yes, I added tests to the test suite