Fix EZP-22051: As a editor, I want content preview to work with new stack

https://jira.ez.no/browse/EZP-22051

This PR introduces new `PreviewController`, accessible by a declared route. This route overrides legacy `content/versionview` module (the iframe in admin interface).

## Tasks
* [x] Adapt various view providers and configResolver
* [x] Implement controller
* [ ] Tests