[FEAT] add list.value_counts()

[andrewgazelka]

still a few things to do particular with types being null or not... but at least should not crash now

[codspeed-hq]

CodSpeed Performance Report

Merging #2902 will not alter performance

_{Comparing andrew/list-value_counts (9aee66d) with main (868bbfa)}

Summary

✅ 17 untouched benchmarks

[codecov]

Codecov Report

Attention: Patch coverage is 19.80198% with 81 lines in your changes missing coverage. Please review.

Project coverage is 62.87%. Comparing base (d5b9a95) to head (99e90d0).
Report is 2 commits behind head on main.

Files with missing lines	Patch %	Lines
src/daft-core/src/array/ops/list.rs	18.36%	80 Missing ⚠️
daft/expressions/expressions.py	50.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2902      +/-   ##
==========================================
- Coverage   66.33%   62.87%   -3.47%     
==========================================
  Files        1004     1001       -3     
  Lines      114031   116662    +2631     
==========================================
- Hits        75645    73353    -2292     
- Misses      38386    43309    +4923     

Flag	Coverage Δ
	62.87% <19.80%> (-3.47%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

Files with missing lines	Coverage Δ
src/daft-core/src/array/fixed_size_list_array.rs	79.58% <ø> (ø)
src/daft-core/src/array/list_array.rs	83.53% <ø> (ø)
src/daft-core/src/array/ops/arrow2/comparison.rs	98.70% <100.00%> (ø)
src/daft-core/src/array/struct_array.rs	79.71% <ø> (ø)
src/daft-core/src/lib.rs	100.00% <ø> (ø)
daft/expressions/expressions.py	93.25% <50.00%> (-0.12%)	⬇️
src/daft-core/src/array/ops/list.rs	82.68% <18.36%> (-11.51%)	⬇️

... and 85 files with indirect coverage changes

[jaychia]

Give example usage