[CC-24379] Add folder resource and folder CRUD functionality

[jenngeorge]

This change introduces a new Folder resource and adds the relevant CRUD functionality. Support for cluster parent_id is also added.

Commit checklist

• [x] Changelog
• [x] Doc gen (make generate)
• [x] Integration test(s)
• [x] Acceptance test(s)
• [x] Example(s)

TODO

• [x] new folder resource
• [x] support cluster parent_id
• [x] workflow example with folders, a cluster with parent_id, set folder roles
• [x] replace local cc go sdk use with the updated version (when available)

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This change is 

[jenngeorge]

Adding to the changes in https://github.com/cockroachdb/terraform-provider-cockroach/pull/124 while @cameronnunez is OOO.