Demonstration of SHACL profile modularization using Title shapes

[rjyounes]

This is an example of how SHACL shapes can be modularized, using title form shapes as illustration. There are a number of open questions, repeated below from the top of bibliotek-o_shapes_form_title.ttl. If we like this approach we can follow through with the implementation throughout.

• Decide on namespace - use http://bibliotek-o.org/shapes/?
• Import of non-versioned ontologies (BF) - can we import from file system?
• Do we give these terms a different namespace from the main file, and do imports, or does it work to just put them in the same namespace? (latter preferred if it works).
• Change all blank nodes to URI resources
• Make sure use of HasTitlePropertyShape to define the title property shape on a work form works
• Directory structure and naming conventions
• Should implementations import these files or copy them into a "target-shapes" directory?
• Should each file be a separate shapes module with a different namespace? Then need to use imports between files.
• Conventions for form shapes vs validation shapes. Using form-shapes directory for now, later if we do validation can have sibling validation-shapes directory. But will it be possible to maintain complete bifurcation? (Doesn't need to be addressed if/until we start working on validation shapes.

[rjyounes]

Not ready for merge yet. Need to explore further.