Browser-compatible version

[lsd-cat]

As part of my work on sigstore/sigstore-js#1195, I would like to port at least a subset of the functionality of this package to work in a browser natively. Of course, some compromises have to be made, namely the only way to make external requests is fetch() and it is not possible to have local filesystem access. I can implement caches anyway through in any of the storage methods offered for plugins.

I will keep updates here of my result, and eventually I'd be happy to contribute back anything that could be useful.