feat: support atomic bulk actions

[frankdugan3]

Is your feature request related to a problem? Please describe.

I have a number of bulk actions that require auditing and atomic actions w/ rollback. For example, a packing list form which updates the ownership of a number of scanned items.

The trouble is that AshPaperTrail currently interferes with atomicity. :full_diff tracking mode may not be possible currently, but :changes_only should be possible to support atomically.

Describe the solution you'd like

The change for create_new_version should be refactored for support of bulk/atomic operations where possible. Currently, this would probably exclude :full_diff tracking mode, supporting only :snapshot and :changes_only.

Describe alternatives you've considered

• Mixins aren't capable of adding this as an escape hatch.
• Currently using a custom changeset to store changes in a []json column, which is pretty hacky.