Deprecate camel-quarkus-langchain4j extension

[jamesnetherton]

camel-quarkus-langchain4j is a custom extension introduced to bridge some Quarkus LangChain4j functionality with Camel.

I wonder if we really need it and whether it is providing any real value? It also tightly couples the project with Quarkus LangChain4j which is perhaps not desirable.

We already have a dedicated component to chat with an LLM (camel-langchain4j-chat) and from Camel 4.14.0 we'll have an extension for camel-langchain4j-agent.