feat: Add support for write-only password

[jvanbrunschot]

Description

Add support for write_only passwords. There seems to be a bug in terraform 1.11.0:

╷
│ Error: failed to encode module.db_write_only.module.db_instance.aws_db_instance.this[0] in state: .password_wo: cannot serialize value marked as cty.NewValueMarks(marks.Ephemeral, marks.Sensitive) for inclusion in a state snapshot (this is a bug in Terraform)
│ 
│ 
│ Error: Changes.Encode: new value .password_wo: can't serialize value marked with cty.NewValueMarks(marks.Ephemeral, marks.Sensitive) (this is a bug in Terraform)

should be solved in 1.11.1 hashicorp/terraform#36619

Motivation and Context

Write Only password benefit from the fact that secrets are not stored in state anymore.

Breaking Changes

Requires Terraform version >= 1.11

How Has This Been Tested?

• I have updated at least one of the examples/* to demonstrate and validate my change(s)
• I have tested and validated these changes using one or more of the provided examples/* projects

• I have executed pre-commit run -a on my pull request