[wip] JSON IDL V2

[Future-Outlier]

Flytekit

flyteorg/flytekit#2741

Tracking issue

#5318

Why are the changes needed?

What changes were proposed in this pull request?

How was this patch tested?

Setup process

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Check all the applicable boxes

• I updated the documentation accordingly.
• All new and existing tests passed.
• All commits are signed-off.

Related PRs

Docs link

[codecov]

Codecov Report

Attention: Patch coverage is 4.81928% with 158 lines in your changes missing coverage. Please review.

Project coverage is 36.18%. Comparing base (89efcc6) to head (dd21c31).
Report is 163 commits behind head on master.

Files with missing lines	Patch %	Lines
flyteidl/gen/pb-go/flyteidl/core/literals.pb.go	4.54%	105 Missing ⚠️
...opeller/pkg/controller/nodes/attr_path_resolver.go	5.76%	47 Missing and 2 partials ⚠️
flytepropeller/pkg/compiler/validators/typing.go	0.00%	1 Missing and 1 partial ⚠️
flytepropeller/pkg/compiler/validators/utils.go	0.00%	2 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #5735      +/-   ##
==========================================
- Coverage   36.21%   36.18%   -0.04%     
==========================================
  Files        1303     1303              
  Lines      109568   109663      +95     
==========================================
  Hits        39683    39683              
- Misses      65764    65857      +93     
- Partials     4121     4123       +2     

Flag	Coverage Δ
unittests-datacatalog	51.37% <ø> (ø)
unittests-flyteadmin	55.63% <ø> (+0.01%)	⬆️
unittests-flytecopilot	12.17% <ø> (ø)
unittests-flytectl	62.21% <ø> (-0.05%)	⬇️
unittests-flyteidl	7.11% <4.54%> (-0.01%)	⬇️
unittests-flyteplugins	53.35% <ø> (ø)
unittests-flytepropeller	41.66% <5.35%> (-0.10%)	⬇️
unittests-flytestdlib	55.35% <ø> (ø)

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