Describe the bug

Throws exception when automatically creating a specified index type that requires some index argument

The reason is that MilvusEmbeddingStore does not support the configuration for additional parameters extraParam when it supports custom index types

For example, an IVF_FLAT index requires the parameter nlist, otherwise the following exception will be thrown when the index is creating

nlist out of range: [1, 65536]

Log and Stack trace

17:12:04.198 [main] ERROR io.milvus.client.AbstractMilvusGrpcClient - CreateIndexRequest collectionName:demo, fieldName:vector failed, error code: 65535, reason: nlist out of range: [1, 65536]
17:12:04.200 [main] ERROR io.milvus.client.AbstractMilvusGrpcClient - CreateIndexRequest collectionName:demo, fieldName:vector failed! Exception:{}
    io.milvus.exception.ServerException: nlist out of range: [1, 65536]
    at io.milvus.client.AbstractMilvusGrpcClient.handleResponse(AbstractMilvusGrpcClient.java:347)
    at io.milvus.client.AbstractMilvusGrpcClient.createIndex(AbstractMilvusGrpcClient.java:1207)
    at io.milvus.client.MilvusServiceClient.lambda$createIndex$26(MilvusServiceClient.java:487)
    at io.milvus.client.MilvusServiceClient$$Lambda$9/21201513.call(Unknown Source)
    at io.milvus.client.MilvusServiceClient.retry(MilvusServiceClient.java:285)
    at io.milvus.client.MilvusServiceClient.createIndex(MilvusServiceClient.java:487)
    at dev.langchain4j.store.embedding.milvus.CollectionOperationsExecutor.createIndex(CollectionOperationsExecutor.java:93)
    at dev.langchain4j.store.embedding.milvus.MilvusEmbeddingStore.(MilvusEmbeddingStore.java:91)
    at dev.langchain4j.store.embedding.milvus.MilvusEmbeddingStore$Builder.build(MilvusEmbeddingStore.java:329)
    at MilvusTest.main(MilvusTest.java:18)
Exception in thread "main" dev.langchain4j.store.embedding.milvus.RequestToMilvusFailedException: Request to Milvus DB failed. Response status:'65535'.
    at dev.langchain4j.store.embedding.milvus.CollectionOperationsExecutor.checkResponseNotFailed(CollectionOperationsExecutor.java:132)
    at dev.langchain4j.store.embedding.milvus.CollectionOperationsExecutor.createIndex(CollectionOperationsExecutor.java:94)
    at dev.langchain4j.store.embedding.milvus.MilvusEmbeddingStore.(MilvusEmbeddingStore.java:91)
    at dev.langchain4j.store.embedding.milvus.MilvusEmbeddingStore$Builder.build(MilvusEmbeddingStore.java:329)
    at MilvusTest.main(MilvusTest.java:18)
Caused by: io.milvus.exception.ServerException: nlist out of range: [1, 65536]
    at io.milvus.client.AbstractMilvusGrpcClient.handleResponse(AbstractMilvusGrpcClient.java:347)
    at io.milvus.client.AbstractMilvusGrpcClient.createIndex(AbstractMilvusGrpcClient.java:1207)
    at io.milvus.client.MilvusServiceClient.lambda$createIndex$26(MilvusServiceClient.java:487)
    at io.milvus.client.MilvusServiceClient$$Lambda$9/21201513.call(Unknown Source)
    at io.milvus.client.MilvusServiceClient.retry(MilvusServiceClient.java:285)
    at io.milvus.client.MilvusServiceClient.createIndex(MilvusServiceClient.java:487)
    at dev.langchain4j.store.embedding.milvus.CollectionOperationsExecutor.createIndex(CollectionOperationsExecutor.java:93)
    ... 3 more

To Reproduce

public class MilvusTest {

    public static void main(String[] args) {
        EmbeddingStore<TextSegment> embeddingStore = MilvusEmbeddingStore.builder()
                .host("localhost")
                .collectionName("demo")
                .port(19530)
                .dimension(768)
                .indexType(IndexType.IVF_FLAT)
                .build();

    }
}

Expected behavior

Support users to configure the additional parameter extraParam and others that I haven't listed yet

For example, I create the index directly using the milvus client, which supports parameters such as extraParam and syncMode

    private void _createIndex(String collectionName) {
    CreateIndexParam createIndexParam = CreateIndexParam.newBuilder()
            .withCollectionName(collectionName)
            .withFieldName(MilvusConstant.VECTOR_FIELD)
            .withIndexType(IndexType.IVF_FLAT)
            .withMetricType(MetricType.IP)
            //  the recommended value of nlist is 4 × sqrt(n), where n is the total number of entities in a segment.
            .withExtraParam("{\"nlist\":16384}")
            .withSyncMode(Boolean.FALSE)
            .build();
    R<RpcStatus> response = client.createIndex(createIndexParam);
    checkResponse(response);
    logger.info("create index success:{}", collectionName);
}

Please complete the following information:

• LangChain4j version: 0.2.8
• LLM(s) used: none
• Java version: 8
• Spring Boot version (if applicable):

Additional context