feat: add more parameters to the fill_null method

[IsaiasGutierrezCruz]

What type of PR is this? (check all applicable)

• 💾 Refactor
• ✨ Feature
• 🐛 Bug Fix
• 🔧 Optimization
• 📝 Documentation
• ✅ Test
• 🐳 Other

Related issues

• Closes [Enh]: include strategies "forward" and "backward" for the method "fill_null" #1146

Checklist

• Code follows style guide (ruff)
• Tests added
• Documented the changes

If you have comments or can explain your changes, please do so below.

[FBruzzesi]

This is great! Thank you some much for the effort!
I think the only bits missing to pass the ci are:

• Testing the ValueError raise(s)
• Silence the modin warning in pyproject.toml

Additionally I left a few comments in the code, leaning to the nitpick area 😂

[FBruzzesi]

I am tempted to say that coverage not showing may be an issue in pytest-cov itself - by rewriting the code with less nested statements, then it shows as covered 🤔

[IsaiasGutierrezCruz]

I am tempted to say that coverage not showing may be an issue in pytest-cov itself - by rewriting the code with less nested statements, then it shows as covered 🤔

Yeah, it was a bit strange, but I've already refactored the code to pass the coverage tests. Thanks for pointing it out! c:

[FBruzzesi]

Thanks a ton @IsaiasGutierrezCruz ! I am really happy to see this one!

When I will be back from vacation I may try to replicate the issue with coverage as well 🙃

[MarcoGorelli]

awesome work, thanks @IsaiasGutierrezCruz (and @FBruzzesi for reviewing!)

[IsaiasGutierrezCruz]

I already resolved all the conversations 😃 @MarcoGorelli

[MarcoGorelli]

thanks! there's a merge conflict, then i'll try to get this in

[IsaiasGutierrezCruz]

Hi @MarcoGorelli , I hope you're doing well! I’ve implemented the last suggestion you provided some time ago. I just wanted to check in and see if there's anything else needed on my end for this pull request. Thanks for your time!

[MarcoGorelli]

thanks @IsaiasGutierrezCruz , and thanks @FBruzzesi for reviewing!

sorry this took a while - very creative solution here for pyarrow, love it! 🙌 😍