Code generate ResourceGroup

[matthchr]

Removes the handcrafted ResourceGroup in favor of a code generated one. The two are the same in structure except for Status.ProvisioningState, which is now Status.Properties.ProvisioningState (matching ARM).

Special notes for your reviewer:
This change is breaking for:

1. Consumers of the status provisioningState
2. Consumers of the API types directly (which we currently don't give a go mod guarantee for anyway)

If applicable:

• this PR contains documentation
• this PR contains tests

[matthchr]

Note that I had to edit the recordings but only because the generated code has the same properties in a slightly different order which impacts JSON serialization order. In practice this isn't an issue.

I specifically tested old RG to new RG in kind manually by installing the old shape, then installing the new CRDs and operator and using the new shape -- exisitng RGs get reconciled just fine. This is as expected because the JSON shape in etcd hasn't changed even though the storage type has.

[matthchr]

/ok-to-test sha=9a72b1f

[codecov-commenter]

Codecov Report

Merging #2748 (9a72b1f) into main (cde9fa2) will decrease coverage by 0.01%.
The diff coverage is 50.62%.

@@            Coverage Diff             @@
##             main    #2748      +/-   ##
==========================================
- Coverage   56.01%   56.01%   -0.01%     
==========================================
  Files         973      978       +5     
  Lines      349026   348295     -731     
==========================================
- Hits       195520   195091     -429     
+ Misses     122687   122373     -314     
- Partials    30819    30831      +12     

Impacted Files	Coverage Δ
v2/internal/controllers/controller_resources.go	78.44% <ø> (-0.87%)	⬇️
.../generator/internal/codegen/pipeline/load_types.go	7.31% <0.00%> (-0.04%)	⬇️
.../internal/functions/locatable_resource_function.go	0.00% <0.00%> (ø)
...nerator/internal/jsonast/swagger_type_extractor.go	17.86% <0.00%> (-0.10%)	⬇️
...a1api20200601/resource_group_spec_arm_types_gen.go	33.33% <33.33%> (ø)
...1beta20200601/resource_group_spec_arm_types_gen.go	33.33% <33.33%> (ø)
.../v1beta20200601storage/resource_group_types_gen.go	44.82% <44.82%> (ø)
...pha1api20200601storage/resource_group_types_gen.go	46.04% <46.04%> (ø)
...es/v1alpha1api20200601/resource_group_types_gen.go	50.48% <50.48%> (ø)
...sources/v1beta20200601/resource_group_types_gen.go	57.42% <57.42%> (ø)
... and 82 more

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[matthchr]

/ok-to-test sha=9a72b1f