Idea: support tar or zip files

[sffc]

It would be cool to write Rust code that could accept a &dyn chicon::FileSystem argument and then read data from a variety of file system formats. It would be nifty if there were other implementations like TarFS or ZipFS that read paths from a tar or zip file. This would enable library authors to write functions that could read from either a flat directory or from a tar/zip file directly.

[bnjjj]

Ok interesting. I will check how to implement it