Create a standard zip file reading utility wrapper using fflate

[rtibbles]

Currently we use JSZip in the perseus viewer library to read zip files on the client side.

In the hashi package, we use the fflate library for the same purpose.

In benchmarking, fflate seems to be much more performant that JSZip. We should make a standard utility wrapper for the fflate layer, and then utilize it in both places.

Seems simplest to create another package under packages/ to contain this, so it can be imported in hashi and in the perseus viewer.

This would also then be usable by the WIP PR here: #8070

[rtibbles]

Fixed in #11539