[WIP] Add eq-to-pos delete job session draft

[Zyiqin-Miranda]

For getting overall high-level feedback purpose.

[Zyiqin-Miranda]

First version of converter with test to verify correctness working here.
For easier review, an overview of the converter currently:

1. Fetch all equality deletes, data files, previous position deletes in one for loop that having partition value as key here
2. For each buckets' files, we have file sequence number (similar to storage layer stream_position) attached, and ONLY fetch relevant data files with equality delete files here.
   By relevant, refer to Iceberg spec, specifically:
   An equality delete file must be applied to a data file when all of the following are true:
   The data file's data sequence number is strictly less than the delete's data sequence number
   The data file's partition (both spec id and partition values) is equal [4] to the delete file's partition or the delete file's partition spec is unpartitioned
3. Convert remote function will use Daft native reader to only read hash value of merge key columns (primary key columns), append file_path, row_index and use zero-copy pyarrow is_in, filter function to find the pos to delete
4. Upload to S3 with new pos delete files and commit a overwrite (replace not supported yet) snapshot here