Feature request: Custom resources support

[Enase]

trafficstars

Serverless 1.47.0 introduces support for existing S3 buckets that relates to global custom resources feature.

S3 Related Artifacts:

• customResources see diff
• s3 events see diff

Cognito User Pool Artifacts

• https://github.com/serverless/serverless/pull/6362

Would be great if we find a way to add support for this. Thanks in advance!