Support inline object schemas

[dbanty]

Requested by a whole host of people, this will close #162 by generating classes for object-type schemas declared "inline" instead of just for those included in references. Today, depending on where there declared, those types of schemas are either converted to generic dictionaries or thrown out altogether.

In order to achieve this, this PR also includes some major refactoring of the way Models (classes to be generated from schemas) and Enums are handled.

TODO:

• Pull in the new UNSET features once merged to main (Better compatibility for "required" vs. "nullable" #230)
• Finish removing DictProp usages in favor of ModelProperty
• Switch to attrs from dataclasses in properties code
• Make responses utilize properties to support all the same types
• Improve naming of inline schemas based on parent name
• Get coverage back up
• Add in depth CHANGELOG entry for what to expect in the new version
• Generate some clients for manual testing

[codecov]

Codecov Report

Merging #236 (c01a89f) into main (296ffb6) will not change coverage.
The diff coverage is 100.00%.

@@            Coverage Diff            @@
##              main      #236   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files           41        46    +5     
  Lines         1332      1302   -30     
=========================================
- Hits          1332      1302   -30     

Impacted Files	Coverage Δ
openapi_python_client/__init__.py	100.00% <100.00%> (ø)
openapi_python_client/parser/openapi.py	100.00% <100.00%> (ø)
...penapi_python_client/parser/properties/__init__.py	100.00% <100.00%> (ø)
...enapi_python_client/parser/properties/converter.py	100.00% <100.00%> (ø)
...i_python_client/parser/properties/enum_property.py	100.00% <100.00%> (ø)
..._python_client/parser/properties/model_property.py	100.00% <100.00%> (ø)
...penapi_python_client/parser/properties/property.py	100.00% <100.00%> (ø)
openapi_python_client/parser/properties/schemas.py	100.00% <100.00%> (ø)
openapi_python_client/parser/responses.py	100.00% <100.00%> (ø)
... and 5 more

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[dbanty]

@emannguitar there is something weird going on here with Unset and json body params. Not sure why it's doing what it's doing. Looks to me like the param is required? I've been staring at this too long and could use a second set of eyes.

The problem child is in golden-record/api/tests/test_inline_objects/_get_kwargs if you get a moment and can poke at it. I think that's the last bit of failing tests before I can move on to implementing the new features for responses too.

[dbanty]

Nevermind I fixed it! Was reassigning a variable in a loop 🤦🏻‍♂️

[dbanty]

Because naming fixes are actually required to get this feature across the finish line, I'm going to close #191 with this too.

[dbanty]

I generated a prox trace client and read through some of it, it all looked good. Probably should generate inv/frt clients and test them in FST just to make sure nothing subtle is broken.

After merge I'm going to release main as 0.7.0-alpha.0 so any adventurous souls can try out all the breaking changes before we call it done. @emannguitar will hopefully be one of those people.

[emann]

Breaking change with File stuffs needs to be documented + a suggestion for possible improvement on converting defaults, but other than that looks good!

[dbanty]

@emannguitar I believe this is ready for approval now? Double check my new changelog note makes sense.