Implement `speced/doc`

[vemv]

Brief

Fixes https://github.com/nedap/utils.spec/issues/53

speced/doc is a drop-in replacement for clojure.repl/doc. It macroexpands to it, and in addition to that, it possibly printlns the "docstring" of a given spec defined with def-with-doc.

I would recommend to refer doc in your user.clj / dev.clj.

QA plan

• Verify that the tests make sense

• Feel free to play with things in a repl:

• Also feel free to open nedap.utils.spec.doc/rebl-doc-registry in REBL:

Author checklist

• [x] I have QAed the functionality
• [x] The PR has a reasonably reviewable size and a meaningful commit history
• [x] I have run the branch formatter and observed no new/significative warnings
• [x] I have self-reviewed the PR prior to assignment, and its build passes
• Specifically, I have code-reviewed iteratively the PR considering the following aspects in isolation:
  • [x] Correctness
  • [x] Robustness (red paths, failure handling etc)
  • [x] Modular design
  • [x] Test coverage
  • [x] Spec coverage
  • [x] Documentation
  • [x] Security
  • [x] Performance
  • [x] Cross-compatibility (Clojure/ClojureScript)

Reviewer checklist

• [ ] I have checked out this branch and reviewed it locally, running it
• [x] I have QAed the functionality
• I have code-reviewed iteratively the PR considering the following aspects in isolation:
  • [x] Business-facing correctness
  • [x] Robustness (red paths, failure handling etc)
  • [x] Modular design
  • [x] Test coverage
  • [x] Spec coverage
  • [x] Documentation
  • [x] Security
  • [x] Performance
  • [ ] Cross-compatibility (Clojure/ClojureScript)

[vemv]

Updated REBL screenshot, now it's much more passable :)