Suggest uppercased package name when not found

[fonsp]

To help users in situations like fonsp/Pluto.jl#1068

[fredrikekre]

This seems like an somewhat arbitrary thing to suggest (why not PLUTO for example)? There was a PR to Julia which suggested similar names when you try to load a package with a type (e.g. using pluto would suggest using Pluto) but I can't find it now. I think something like that would be much better.

[KristofferC]

Suggesting similar package names based on what is available in the registry would probably work better.

[fonsp]

This seems like an somewhat arbitrary thing to suggest

Good point! Feel free to close this PR, I'm not very invested in it

[fredrikekre]

Suggesting similar package names based on what is available in the registry would probably work better.

Yea thats what I meant.

[StefanKarpinski]

Edit distance with a low cost for case changes would be a good way to do this. Now that we have usage stats we can combine with a "language model" that uses package popularity to decide what's most likely.

[IanButterworth]

Converted into a feature request. thanks @fonsp