fix: deduplicate OpenAPI definitions for GVKParser (#587) (#590)

* fix: deduplicate OpenAPI definitions for GVKParser



* do the thing that was the whole point



* more logs



* don't uniquify models



* schema for both



* more logs



* fix logic



* better tainted gvk handling, better docs, update mocks



* add a test



* improvements from comments



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Signed-off-by: Michael Crenshaw <350466+crenshaw-dev@users.noreply.github.com>

Author: crenshaw-dev