feat: Add selfSignUpEnabled option to CognitoAuth for user pool configuration

[KennyDizi]

PR Type

Feature, Enhancement

---

PR Description

• Added selfSignUpEnabled option to CognitoAuthProps interface.

• Integrated selfSignUpEnabled into Cognito user pool configuration.

• Default value for selfSignUpEnabled set to false.

• Enhanced flexibility for user pool self-signup configuration.

Checklist

• My code adheres to the CONTRIBUTING GUIDE
• I have updated the relevant documentation (if applicable).

---

By submitting this pull request, I confirm that you can use, modify, copy, and redistribute this contribution, under the terms of the project license.

[KennyDizi]

🥦 🌵 I have revised the PR description to reflect the changes made to the latest commit (87b6e1b).

[tobuck-aws]

@KennyDizi , first off, thanks for the contribution!

Re: the PR, I'm curious as a SaaS provider when you'd ever want your users to be able to self-signup? Given that users in this user pool typically have admin-access over the whole SaaS application, I would think we'd want to err on the side of too restrictive, vs. too permissive.

Is this more for demo-ability, given that SBT can be used as an educational aid?

@suhussai any comments here?

[suhussai]

@KennyDizi , first off, thanks for the contribution!

Re: the PR, I'm curious as a SaaS provider when you'd ever want your users to be able to self-signup? Given that users in this user pool typically have admin-access over the whole SaaS application, I would think we'd want to err on the side of too restrictive, vs. too permissive.

Is this more for demo-ability, given that SBT can be used as an educational aid?

@suhussai any comments here?

Totally agree. @KennyDizi , if you can share what you're trying to do, perhaps we can come up with a different solution.

[KennyDizi]

I got miss understanding @tobuck-aws @suhussai I will close this PR.