Allow search for versions directly on npmjs api

[diegoholiveira]

After a small discussion on pkgxdev/pantry#4554, I made this PR to allow us to be able to define packages versions as:

versions:
  npm: nx
  ignore: ["9999.0.1", "999.9.9"]

This will search for versions directly on the NPM Registry API.

I do think this is as much pleasant as fetching versions from github and less prone to errors parsing from HTML with url.

[jhheider]

This is a good idea.

[jhheider]

this looks good; careful about adding a lot of formatting changes (especially if it doesn't match existing formats, as it makes the diff noisier.

[diegoholiveira]

this looks good; careful about adding a lot of formatting changes (especially if it doesn't match existing formats, as it makes the diff noisier.

You're right, I revert those changes introduced by prettier (my code editor is configured to run it after save). The diff is much more clear now.