Function load_precomputed_partitions

pub async fn load_precomputed_partitions(
    stream: impl RecordBatchStream + Unpin + 'static,
    size_hint: usize,
) -> Result<HashMap<u64, u32>>

Load precomputed partitions from disk.

Currently, because Dataset is not cleanly refactored from lance to lance-core, we have to use RecordBatchStream as parameter.