quarkus-llm-workshop and quarkus-langchain4j-workshop

These two workshops are **complements**, with the "quarkus-llm-workshop" likely focusing on the broader concepts and direct interaction with LLMs, while the "quarkus-langchain4j-workshop" specifically teaches how to integrate and build AI-infused applications using the LangChain4j framework within Quarkus, leveraging the foundational knowledge from the LLM workshop.