See this for Deno's localStorage: https://deno.land/manual@v1.16.4/runtime/web_storage_api

According to docs we can tie local storage to the location, as set by --location, which is this:

--location <HREF>                                   
            Value of 'globalThis.location' used by some web APIs

We should probably set that anyways to something sensible, like maybe the appspace address?

Another concern is around import/export of appspace data.