Design a approach that uses ray to concurrently scan lance with multiple actors. #23
Description
The read_lance API has already been developed, but this API is more geared towards data processing ETL. It is not very suitable for analysis query scenarios.
A new API is needed to query Lance, such as count, sample, and ANN queries.
The first version should strive to keep the API simple, while not creating new concepts, and should try to reuse the APIs and data structures that lance and ray already have.