[Tagging] Improved Taxonomy Detail Page

[bradenmacdonald]

"As any logged-in user, I can view an enabled taxonomy's metadata and tags."

This story involves fleshing out the #138 to better match the design.

Acceptance Criteria

1. A Paragon DataTable will be used to display the taxonomy tags, with pagination.
2. Hierarchical tags are displayed collapsed by default but can be expanded on click.
3. Only the root tags are paginated via the DataTable's pagination.
   
4. Do not implement Keyword filtering for now - that will come in [Tagging] Keyword filtering of a Taxonomy's tags #128
5. Do not implement "Expand All" for now - that will come in [Tagging] Add "Expand All" button to Taxonomy View #112

Developer Notes

• The same view will be re-used as the "Edit Taxonomy" view, so design with that in mind.
• Screenshots above are for convenience - Figma is the most up-to-date source for mockups. The scale of UI elements seen in the screenshots above may be incorrect.
• We may or may not keep the tweak to how pagination works in-scope for this MVP, but in any case it's a separate ticket - see [Tagging] Improve pagination of Paragon Data Tables #111

[bradenmacdonald]

I think this ticket is mostly implemented now? I put some known follow-up items into #155