Add langchain4j-embeddingstore-ql4j integration test module

[jamesnetherton]

What to test:

camel-quarkus-langchain4j-embeddingstore ADD/REMOVE/SEARCH operations using an EmbeddingStore bean that could be provided by Quarkus LangChain4j.

E.g using one of the vector stores described here:

https://docs.quarkiverse.io/quarkus-langchain4j/dev/rag.html

Ideally choosing one that is simple to configure and setup via a container (perhaps qdrant etc).

Scenarios:

• Camel route performs ADD + SEARCH using a Quarkus LangChain4j provided EmbeddingStore
• Verify data written by Camel is readable by Quarkus LangChain4j RAG ContentRetriever (and vice versa)
• EmbeddingStoreFactory compatibility with Quarkus LangChain4j store configuration