feat: Add prompt verions REST route `/prompts/{id}/versions` (#6098)

* feat(promts): skeleton UI for promts (#5726)

* wip

* WIP

* WIP

* add the prompt type

* add initial listing

* feat: temporary prompt

* final changes

* add aria role

* Build OpenAPI schema

* Use GID, not databse ID

* Build openapi schema

* Refactor to use prompt identifier

* Update OpenAPI schema

* Ruff 🐶

* Update route and openapi schema

* Use new pydantic models

* Restore latest route

* Rebuild schema

* Add warning (we're not handling citation events)

* Temporarily ignore `assert_never`

* Remove react component

* Remove component

* Ruff 🐶

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Co-authored-by: Mikyo King <mikyo@arize.com>