"generate documentation template" code action

[bddap]

It would be nice to be able to generate a docstring based on the type signature. I think in general this can help encourage people to write docstrings.

Previous work:

• in rust analyzer: generate_documentation_template. example: https://rust-analyzer.github.io/thisweek/2021/12/13/changelog-107.html#new-features
• in pycharm: https://www.jetbrains.com/help/pycharm/creating-documentation-comments.html#b1406e21

[bschnurr]

Thanks for the suggestion

[judej]

Moving this issue to discussion as an enhancement request for comments and upvotes.