A simple utility to serve you files on a
platter works on both desktop and web, and returns a byte buffer of the file's contents.
load_file is backed by native file system APIs. On web, it is backed by an
HTTP 'GET' request.
platter on the web, you'll need to choose either the
web-sys feature and
enable it. This determines which method of binding to browser APIs
platter will use.
Create a Future that loads a file into an owned Vec of bytes