Implement storage description resource discovery

[csarven]

https://solidproject.org/ED/protocol#server-storage-description details the discovery of the storage description resource.

Servers MUST include the Link header field with rel="http://www.w3.org/ns/solid/terms#storageDescription" targeting the URI of the storage description resource in the response of HTTP GET, HEAD and OPTIONS requests targeting a resource in a storage.

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https://github.com/solid/specification/issues/355#issuecomment-1140508784 shows how an application (e.g., https://dokie.li/ ) makes use of such resource to discover the features of the storage. Some common use cases are mentioned in https://github.com/solid/specification/issues/355#use-cases