Feature to make the storage repository-aware

[csarven]

It'd be really useful to different users and workflows to have the possibility to configure the NSS instance so that the storage synchronises with changes to a repository (e.g., git). For example, remote changes can make its way to the storage, and similarly any changes to the "non-sensitive" resources (such as ACLs) can make their way to shared repository.

Something like this would allow Solid applications to make changes to resources as they normally do but there is the added benefit to those automatically being versioned somewhere away and safe. And, if anyone makes changes to the same resources on the repository, they can also be useful.

(I originally proposed this feature in https://github.com/CommunitySolidServer/CommunitySolidServer/issues/1114 , https://web.archive.org/web/20241112192440/https://github.com/CommunitySolidServer/CommunitySolidServer/issues/1114 )