Enhance AI services with new tools and models

Set up multiple Spring Boot AI modules with configurations

Refactor project and add LangChain4j examples

Refactor test method names for clarity and add logging in ToolsCallingTest

Add weather service and customer tools with corresponding DTOs and tests

Add tool & function calling examples

Update compression query transformer test with new city query and default chat options

Add new RAG module with query transformers and tests

Add initial Spring Boot Ollama project setup

Refactor project structure and add image-to-text test

Update README to remove redundant embedding model command

Update README with detailed Spring AI & Ollama examples

Add README for prompt engineering patterns

Add prompt examples and tests for Spring AI integration

Refactor and enhance project structure