Evaluate existing RDF delta/diff formats

[elf-pavlik]

Once we merge #61 we should evaluate suggested technologies:

• https://w3c.github.io/rch-wg-charter/
• https://www.w3.org/2001/sw/wiki/How_to_diff_RDF
• https://afs.github.io/rdf-delta/
• Alternative update support with N3 patch specification#332

[joepio]

I've discussed some more alternatives in this issue.

[csarven]

One of the topics of 2023-02-22 CG meeting was to move this issue to solid/specification: https://github.com/solid/specification/blob/2cb1a31a47a6f6316918e67bbbd5b881b50fb23c/meetings/2023-02-22.md#evaluate-existing-rdf-deltadiff-formats but we didn't get to pick it up then. We can pick up both issues together in this week's meeting (2023-03-01). We don't have to close this issue just yet in case there are unique cases for notifications.

[CxRes]

FYI RFC3229

[elf-pavlik]

https://www.rfc-editor.org/rfc/rfc3229.html#page-22

Our proposal does not recommend any specific algorithm or format, but
rather encourages client and server implementors to choose the most
appropriate one(s).

[CxRes]

True, but the way you provide diffs according to this standard is different from directly providing a media type for the diff. Instead, you provide media-type for content and an algo for diffing. Also, this technique would be general for both RDF and non-RDF resources. Thats what I wanted to bring to everyone's attention.