Search Assets endpoint only returns assets associated with a component even though it is expected some valid assets will not be directly associated with a component

When you do a search via the "/v1/search/assets" endpoint you are actually searching for a component and then fetching the assets for those components. The description "Search Assets" implies you are searching for assets directly. So if you have assets that do not have components associated, you can not find them via search.

We could just update the description, but also I think an actual asset search API would be helpful.

e.g. https://github.com/sonatype/nexus-internal/blob/366b5638d1ded22f103c810cb89ce14eb9168775/components/nexus-repository-services/src/main/java/org/sonatype/nexus/repository/rest/internal/resources/SearchResource.java#L229