[Bug]: Need update index type list

[cydrain]

Is there an existing issue for this?

• I have searched the existing issues

Current Behavior

index type list and metric type list are out-of-date, need update

// Index Constants
const (
	Flat       IndexType = "FLAT" //faiss
	BinFlat    IndexType = "BIN_FLAT"
	IvfFlat    IndexType = "IVF_FLAT" //faiss
	BinIvfFlat IndexType = "BIN_IVF_FLAT"
	IvfPQ      IndexType = "IVF_PQ" //faiss
	IvfSQ8     IndexType = "IVF_SQ8"
	HNSW       IndexType = "HNSW"
	IvfHNSW    IndexType = "IVF_HNSW"
	AUTOINDEX  IndexType = "AUTOINDEX"
	DISKANN    IndexType = "DISKANN"
	SCANN      IndexType = "SCANN"

	GPUIvfFlat IndexType = "GPU_IVF_FLAT"
	GPUIvfPQ   IndexType = "GPU_IVF_PQ"

	GPUCagra      IndexType = "GPU_CAGRA"
	GPUBruteForce IndexType = "GPU_BRUTE_FORCE"

	Scalar IndexType = "SCALAR"
)

Expected Behavior

please sync index type list with python SDK
https://github.com/milvus-io/pymilvus/blob/master/pymilvus/client/utils.py

Steps To Reproduce

No response

Environment

No response

Anything else?

No response

[cydrain]

/assign @congqixia