Show germplasm there is data for

[laceysanderson]

Kirstin expressed a need for a dynamic list of all the germplasm we have sequence data for. This would be in addition to the current search and needs to have both search/browse functionality. It is most useful for nanopore and exome capture data. She had mentioned having a list per technology nested under the current search.

This should be implemented using the chado_search_api.