fix: tuple supported for getitem for Pandas dataframes

[mikeweltevrede]

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

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

Related issues

• Closes #990

Checklist

• [x] Code follows style guide (ruff)
• [x] Tests added
• [x] Documented the changes -> Documented through descriptive tests and this PR, please let us know if documentation in another location is needed.

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

To close #990 we now make sure that Pandas-like Dataframes can be indexed with tuples to support Polars-like behaviour.

[windiana42]

This PR is ready for review.

[mikeweltevrede]

@MarcoGorelli @Riik @windiana42 PS: Here is the video that showed me that typing is really just aliasing collections for a lot of type hints: https://www.youtube.com/watch?v=cv1F_c66utw