Adding supporting content for blog - Elasticsearch vector database for native grounding in Google Cloud Vertex AI Platform

[ranjanadevaji2]

Need assistance to pull these Search templates as defined to be stored as supporting blog content for the Vertex AI blog. we want to link it to the announcement (https://docs.google.com/document/d/1DdfM0pbLsMU46bjxjTjhC6SGrNcwQBf9d7wtgXdKFgw/edit?tab=t.0) for Vertex AI + Elastic and we're hoping it drives traffic to Search Labs. Documenting these under examples or on the Vertex Integration page would be ideal.

Search templates reference doc - https://docs.google.com/document/d/11xrXsgBSHkhtc50j84CrMTuBrIJCsH0ov6UtyrWF1mc/edit?usp=sharing

[JessicaGarson]

I asked @justincastilla to review my code here:

#384