test: add the DefaultEngine::write_parquet_from_filtered_batches test utility

[sebastiantia]

This PR adds the DefaultEngine::write_parquet_from_filtered_batches. This is introduced to allow for:

1. Round-trip testing of the incoming single-file checkpoint write support (feat: add Snapshot::checkpoint() & Table::checkpoint() API #797) requires a way to write the checkpoint data returned by the engine - an iterator of FilteredEngineData batches. For more information: (link to issue)
2. Extension: A checkpoint API on the DefaultEngine which orchestrates the entire checkpointing process, from data creation, to finalization.

Other changes:

• write_parquet_from_batches: Refactors the writing logic from write_parquet to support streaming data by accepting an iterator of batches instead of a single batch. This is leveraged by write_parquet and the new write_parquet_from_filtered_batches

• write_parquet: Functionally the same. Simply refactored to call write_parquet_from_batches under the hood.

[codecov]

Codecov Report

Attention: Patch coverage is 82.35294% with 27 lines in your changes missing coverage. Please review.

Project coverage is 85.10%. Comparing base (635dca1) to head (b995734).
Report is 14 commits behind head on main.

Files with missing lines	Patch %	Lines
kernel/src/engine/default/parquet.rs	81.63%	5 Missing and 22 partials ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #887      +/-   ##
==========================================
+ Coverage   84.98%   85.10%   +0.11%     
==========================================
  Files          84       85       +1     
  Lines       20849    21151     +302     
  Branches    20849    21151     +302     
==========================================
+ Hits        17718    18000     +282     
+ Misses       2241     2238       -3     
- Partials      890      913      +23     

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