[FEATURE] Hover documentation from multiple sources (documentation from `.py` when type comes from `.pyi`)

[tanzious01]

Describe the Bug

jedi shows documentation on hover, similar to how the rust analyzer works, but it doesn't work that well as the rust analyzer. Is this somehow able to be added to pyrefly?

Sandbox Link

No response

(Only applicable for extension issues) IDE Information

No response

[kinto0]

Docstrings like this should work in general. However, this one doesn't work because the source we find for list.append comes from typeshed, not the implementation. In order to do this, we will need hover to be able to merge results from .py and .pyi files. This feature is likely a priority in the upcoming weeks.

[github-actions[bot]]

This issue has been automatically marked as stale because it is assigned, but has not had recent activity for more than 2 weeks.

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[kinto0]

this functionality was added recently, but there is one feature still missing, #1090. closing.