Metadata support

[hrchu]

AS-IS

• solid-file-python treats all resources as regular files.

TO-BE

• For basic users: treats these linked files as tightly bound to the resource they are referencing. In other words when you delete, move, or copy a file that has linked files, the linked files will also be deleted, moved, or copied.
• For advanced users: can modify how linked files are handled with the withAcl, withMeta, agent, and links option flags shown below.

Reference

• https://github.com/jeff-zucker/solid-file-client#linked-files
• https://solidproject.org/TR/protocol#auxiliary-resources