Spring-ai Add support for Elasticsearch vector store: Squashed

Squashed Commits from PR #234 - Add Support for Elasticsearch Vector Store - Rebase, Fix Compilation and Style Errors; Add Missing Dependencies (Christian Tzolov) - Fix ElasticsearchVectorStoreIT FilterExpression with Date Type

Comment From: tzolov

@JM-Lab , thank you for your contribution. I found few issues during the review, but hopefully managed to resolve them before the commit.

Comment From: tzolov

Rebased, squashed and merged at 9334d7d540f8d0ee7cb09e44b272c95c2c159627