[API] Index 'like' queries and use for search
Add a migration that creates trigram indexes on columns currently searchable by full text search. This should concatenate columns to create a single expression index (eg name || description || file_names).
Migration should execute "create extension pg_trgm" and provide a useful error message if the extension is not available (should advise the user to install postgres-contrib and/or link to the migration notes).
Update workbench2 search bar to use ["any", "ilike", "%term%"] instead of '@@'. Workbench should perform splitting of the search on whitespace and add a separate search clause for each term.