[Feature]: supports add or delete index

[hnwyllmm]

Describe your use case

Sometimes, we don't need fulltext index, but we should pay for it. So it's better to support not creating the fulltext index in create_collection interface.
One more thing, we can also allow developer add a fulltext index when they need.
We can do this when seekdb supports metadata index, because it's more complex than vector index and fulltext index.

Describe the solution you'd like

Refer to Chromadb schema to get more ideas.

Describe alternatives you've considered

No response

Additional context

No response