Suggestion: Nushell v0.102 supports autoload

[balupton]

If I understood this correctly, then it means we can now avoid having to require certain files from existing, and instead just write the autoload file:
https://www.nushell.sh/blog/2025-02-04-nushell_0_102_0.html#user-autoload-directories-toc

Makes sense to implement after Nushell's next minor version, as they are still v0 and continuously break, change, and deprecate things.

Would need one for the Dorothy init, and another for the user init.

[balupton]

I wonder if it ignores broken symlinks. If so, that would make our life way easy.