Include Searchstax UI App

It seems like the Search UI App documentation at https://www.searchstax.com/docs/searchstudio/searchstax-studio-searchjs-... may be incomplete or out of date - I wasn't able to get that code working.

However, from within the SearchStax interface, at https://searchstudio.searchstax.com/search-ui/app there's a Search Experience Template URL section, which links to a sample page.

Based on that JavaScript I've got something basic working.

drunken monkey → made their first commit to this issue’s fork.