Allow point in time restoration using a specific datetime

[danfsd]

Describe the Feature

AWS Console and AWS's vanilla aws_rds_cluster resource allows for specifying a date time as opposed to using the latest restorable time.

Expected Behavior

Have the option to pass in restore_to_time as a UTC datetime string instead of passing use_latest_restorable_time (or passing it as false)

Use Case

Having this option is really valuable for running Data Recovery following an incident where the latest restorable time's data may be corrupt.

Describe Ideal Solution

Have a new RDS Cluster created using restored data from a particular point in time (not necessarily the latest point in time).

Alternatives Considered

No response

Additional Context

No response