feat: support filter pushdown for datafusion

[jonathanc-n]

Description

Added Expr to PartitionFilter conversion to pass in filters. Datafusion will pass down all filters for now using supports_filters_pushdown and will filter after partition filters.

Closes #160.

Steps forward

I noticed the pr was getting a bit big to be reviewed all at once, here are some things that will be worked on afterwards:

• Support more operators
• Support more Datafusion Expressions
• Enhance the python implementation for filter conversion
• Make easier to create PartitionFilters for testing, etc.

How are the changes test-covered

Added unit tests for all added functionality

[codecov]

Codecov Report

Attention: Patch coverage is 89.09091% with 12 lines in your changes missing coverage. Please review.

Project coverage is 91.34%. Comparing base (b2c60b1) to head (21db5b8).
Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
python/src/internal.rs	0.00%	7 Missing ⚠️
crates/datafusion/src/util/expr.rs	83.87%	5 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #203      +/-   ##
==========================================
- Coverage   91.79%   91.34%   -0.46%     
==========================================
  Files          21       24       +3     
  Lines         987     1074      +87     
==========================================
+ Hits          906      981      +75     
- Misses         81       93      +12     

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[jonathanc-n]

fixed conflicts

[jonathanc-n]

@xushiyan Should we add some docs to see how to run codecov locally? It takes a lot of time out of the review process

[xushiyan]

@xushiyan Should we add some docs to see how to run codecov locally? It takes a lot of time out of the review process

Yup having some command in Makefile to general html report locally would be beneficial. Codecov aggregates both rust and python, for local mode, not sure how easy to configure that, may start with separate report.

[xushiyan]

I'm going to take a pass by today and fix wherever necessary, and then merge it.