PolyFills for Windows 7 Chrome

Injects javascript to handle features that don't exist on Windows 7's version of Chrome. This includes things like CSS4's ":autofill" selector, Set.prototype.difference, Array.prototype.toSorted, oklch() colours, and "document.hasStorageAccess()".

Note that some of functions described above are not actually re-implemented, just stubbed out enough to work. I would happily accept suggestions of which polyfills to use for each function.

This fixes my issues with:
- paypal login
- immich
- laravel docs
- nest thermostat (home.nest.com)
- autotrader.ca

The required screenshot shows the nest webpage working in Chrome 109.

Note that this extension is intended for Windows 7 Chrome 109 and older. I am unable to test on any newer version of Chrome, so use is at your own risk (and shouldn't be necessary in the first place).