Add System.Text.Json attributes

[JamieMagee]

Prepare codebase for migration to System.Text.Json by adding JsonPropertyName attributes to all serializable models while maintaining Newtonsoft.Json compatibility.

Changes:

• Add JsonPropertyName attributes to serializable model properties
• Add JsonIgnore(Condition.WhenWritingNull) to optional properties
• Explicitly specify [JsonConverter(typeof(JsonStringEnumConverter))] for serializable enums

All serialization tests pass. Both Newtonsoft.Json and System.Text.Json attributes now coexist, enabling gradual migration.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 90.2%. Comparing base (2a8103b) to head (1a0f458).

Additional details and impacted files

@@          Coverage Diff          @@
##            main   #1556   +/-   ##
=====================================
  Coverage   90.2%   90.2%           
=====================================
  Files        426     426           
  Lines      35965   35965           
  Branches    2216    2216           
=====================================
+ Hits       32463   32465    +2     
  Misses      3045    3045           
+ Partials     457     455    -2     

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[Copilot]

Pull request overview

This PR prepares the codebase for migration from Newtonsoft.Json to System.Text.Json by adding JsonPropertyName and JsonConverter attributes alongside existing Newtonsoft.Json attributes. The changes span serializable models across detector contracts, typed components, and BCDE models, maintaining backward compatibility during the transition.

Key changes:

• Added System.Text.Json.Serialization.JsonPropertyName attributes to all serializable properties
• Added System.Text.Json.Serialization.JsonConverter(typeof(JsonStringEnumConverter)) to enums
• Added JsonIgnore(Condition = JsonIgnoreCondition.WhenWritingNull) to nullable properties alongside Newtonsoft.Json's NullValueHandling.Ignore

Reviewed changes

Copilot reviewed 39 out of 39 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
vcpkg/Contracts/ManifestInfo.cs	Added JsonPropertyName for manifest-path property
swiftpm/Contracts/SwiftResolvedFile.cs	Added JsonPropertyName to all Swift package resolution properties
pip/Contracts/*.cs	Added JsonPropertyName to Python package metadata properties
TypedComponent/*.cs	Added JsonPropertyName to component type properties across all ecosystems
BcdeModels/*.cs	Added JsonPropertyName to scan result and container detail properties with camelCase naming
ComponentType.cs, ProcessingResultCode.cs, DependencyScope.cs	Added JsonConverter(typeof(JsonStringEnumConverter)) for enum serialization

[github-actions]

👋 Hi! It looks like you modified some files in the Detectors folder.
You may need to bump the detector versions if any of the following scenarios apply:

• The detector detects more or fewer components than before
• The detector generates different parent/child graph relationships than before
• The detector generates different devDependencies values than before

If none of the above scenarios apply, feel free to ignore this comment 🙂

[Copilot]

Pull request overview

Copilot reviewed 39 out of 39 changed files in this pull request and generated no new comments.