Introduce C++ SDK component type

[grvillic]

Context

We are experimenting with a new component type for C++ SDK version detection.

[codecov]

Codecov Report

❌ Patch coverage is 98.64865% with 1 line in your changes missing coverage. Please review.
✅ Project coverage is 90.0%. Comparing base (f254244) to head (906c026).
⚠️ Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
...on.Contracts/BcdeModels/TypedComponentConverter.cs	0.0%	1 Missing ⚠️

Additional details and impacted files

@@          Coverage Diff          @@
##            main   #1599   +/-   ##
=====================================
  Coverage   90.0%   90.0%           
=====================================
  Files        435     437    +2     
  Lines      37107   37181   +74     
  Branches    2299    2306    +7     
=====================================
+ Hits       33426   33498   +72     
- Misses      3209    3210    +1     
- Partials     472     473    +1     

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[Copilot]

Pull request overview

This PR introduces a new CppSdk component type to support C++ SDK version detection in the Component Detection system. The implementation follows established patterns for TypedComponent classes and includes all necessary registrations for JSON serialization.

Key changes:

• Added CppSdk enum value (20) to ComponentType enum
• Created CppSdkComponent class with Name and Version properties, using "generic" PackageURL type with a "cppsdk" qualifier
• Registered the new component in TypedComponent JSON polymorphic serialization and TypedComponentConverter for Newtonsoft.Json compatibility

Reviewed changes

Copilot reviewed 5 out of 5 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
ComponentType.cs	Added CppSdk = 20 enum value with [EnumMember] attribute
CppSdkComponent.cs	New component class with Name/Version validation, generic PURL with "type=cppsdk" qualifier
TypedComponent.cs	Registered CppSdkComponent in [JsonDerivedType] attributes for System.Text.Json polymorphic serialization
TypedComponentConverter.cs	Added CppSdk to component type mapping dictionary for Newtonsoft.Json compatibility
CppSdkComponentTests.cs	Comprehensive unit tests covering constructor validation, property initialization, and PackageURL format

[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 🙂