Add a new argument to the SHACL generator to exclude imported elements

[vincentkelleher]

The new --exclude-imports argument is meant to allow end-users to allow generate SHACL triples that corresponding to the currently being processed schema hence ignoring the schemas in the imports: section.

This is relevant in the case where someone just wants to validate a certain class that inherits attributes/slots or in the case where one has a base SHACL file that can be merged with any number of custom SHACL files (built with --exclude-imports) to support new entities.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 81.28%. Comparing base (2fdf8b3) to head (4109813).

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #2508   +/-   ##
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  Coverage   81.27%   81.28%           
=======================================
  Files         120      120           
  Lines       13398    13404    +6     
  Branches     3768     3771    +3     
=======================================
+ Hits        10889    10895    +6     
  Misses       1892     1892           
  Partials      617      617           

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[vincentkelleher]

I think I found a solution to make this implementation even simpler by using self.all_classes(import=(..)) rather than filtering the classes myself 😇

[vincentkelleher]

Strangely CodeSpell is failing on a file I didn't modify 🤔
Furthermore, the fail isn't justified as anc is a diminutive for ancestor.