This provides the basic Hugo infrastructure updates to retrieve AI assisted
search results and display them.

In addition, the new directory search-function contains the code used
to implement a cloud function that acts as an intermediary between Hugo
and the Vertex AI search function.  It acts as a gatekeeper allowing
request only from specific websites and coordinates the structuring of
the results with Hugo to allow display.

This demonstrates end to end functionality.  The results are somewhat
rudimentary, the AI is only using the contents of the web page to
address the query.