feat: support file-level statistics and row-group pruning for DataFusion

[xushiyan]

Description

How are the changes test-covered

• N/A
• Automated tests (unit and/or integration tests)
• Manual tests
  • Details are described below

[codecov]

Codecov Report

❌ Patch coverage is 83.33333% with 16 lines in your changes missing coverage. Please review.
✅ Project coverage is 85.12%. Comparing base (0cc771c) to head (87142e8).

Files with missing lines	Patch %	Lines
crates/datafusion/src/lib.rs	66.66%	9 Missing ⚠️
crates/datafusion/src/statistics.rs	94.23%	3 Missing ⚠️
crates/core/src/table/fs_view.rs	75.00%	2 Missing ⚠️
crates/core/src/file_group/file_slice.rs	66.66%	1 Missing ⚠️
crates/core/src/table/file_pruner.rs	75.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #525      +/-   ##
==========================================
- Coverage   85.12%   85.12%   -0.01%     
==========================================
  Files          70       71       +1     
  Lines        4511     4591      +80     
==========================================
+ Hits         3840     3908      +68     
- Misses        671      683      +12     

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