Enable discovery and/or declaration of image or other objects on static pages

[BerciTheBeast]

What problem does this feature solve?

It would solve needing to have all the declarations in the nuxt config (if declared on static pages) or remove the need for declarations altogether (if discovery).

What does the proposed changes look like?

The proposed change would include a config option that would enable image or other object discovery on static pages, as well as functions that would enable filtering of the found options.

_{This feature request is available on Nuxt community (#c95)}