Add ability to ignore enum cases with associated values

[Supereg]

Add ability to ignore enum cases with associated values

♻️ Current situation & Problem

Currently, the TypeInformation framework will reject parsing any enums which contain enum cases with associated values.
This is e.g. a problem in the gRPC exporter, where every enum has a fallback case to support parsing unknown enum values.

💡 Proposed solution

This PR adds the ability to ignore enum cases with associated values instead of rejecting the enum completely. In our case this is fine, as the UNRECOGNIZED case shouldn't be handled anyway. The new option allows to easily add support for parsing those enum cases.

⚙️ Release Notes

• Added ability to parse enums with enum cases with associated values by ignoring them.

➕ Additional Information

Related PRs

• gRPC Client Library Migrator  ApodiniMigrator#11

Testing

Additional testing was added.

Reviewer Nudging

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• I agree to follow the Code of Conduct and Contributing Guidelines.

[codecov]

Codecov Report

Merging #13 (bcbbda9) into develop (ab8fd4f) will decrease coverage by 0.20%.
The diff coverage is 57.15%.

@@             Coverage Diff             @@
##           develop      #13      +/-   ##
===========================================
- Coverage    82.12%   81.93%   -0.19%     
===========================================
  Files           31       31              
  Lines         1599     1604       +5     
===========================================
+ Hits          1313     1314       +1     
- Misses         286      290       +4     

Impacted Files	Coverage Δ
...iniTypeInformation/Init/TypeInformation+Init.swift	44.52% <55.56%> (+1.85%)	⬆️
...podiniTypeInformation/Builder/RuntimeBuilder.swift	100.00% <100.00%> (ø)
Sources/ApodiniTypeInformation/EnumCase.swift	64.00% <0.00%> (-16.00%)	⬇️

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