feat: Add iterators to more types

[raunakab]

Overview

This PR adds more iterators to daft-core datatypes.

[codspeed-hq]

CodSpeed Performance Report

Merging #3539 will degrade performances by 26.61%

_{Comparing feat/more-iters (cae69a8) with main (d103573)}

Summary

❌ 1 regressions
✅ 16 untouched benchmarks

⚠️ Please fix the performance issues or acknowledge them on CodSpeed.

Benchmarks breakdown

	Benchmark	main	feat/more-iters	Change
❌	test_iter_rows_first_row[100 Small Files]	173.6 ms	236.6 ms	-26.61%

[codecov]

Codecov Report

Attention: Patch coverage is 75.00000% with 1 line in your changes missing coverage. Please review.

Project coverage is 77.70%. Comparing base (e5ea73f) to head (cae69a8).
Report is 2 commits behind head on main.

Files with missing lines	Patch %	Lines
src/daft-core/src/array/iterator.rs	75.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #3539      +/-   ##
==========================================
+ Coverage   76.11%   77.70%   +1.58%     
==========================================
  Files         710      710              
  Lines       89196    86943    -2253     
==========================================
- Hits        67894    67557     -337     
+ Misses      21302    19386    -1916     

Files with missing lines	Coverage Δ
src/daft-core/src/array/iterator.rs	66.66% <75.00%> (-33.34%)	⬇️

... and 22 files with indirect coverage changes

[kevinzwang]

LGTM. Maybe you could even put these into a macro, seems like there's a good amount of boilerplate

[raunakab]

LGTM. Maybe you could even put these into a macro, seems like there's a good amount of boilerplate

@kevinzwang Yes, good point! I'll make those edits right now and get a re-review from you.