Add sibling debug scan modifier + tests

[NikolaStojanovicVicert]

Description

This PR introduces a sibling debugScan modifier, which takes in a some View metatype (and internally translates this to a String via String.init(describing:)).

Type of Change

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Documentation update
• Code cleanup/refactoring
• Test improvements
• Build/CI improvements

Screenshots/Logs

Checklist

• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes
• I have updated the CHANGELOG.md (if applicable)

---

Note

Adds a new type-based debugScan overload that derives labels from view types, with comprehensive tests and updated docs/CHANGELOG.

• SwiftUI Modifier:
  • Add type-based overload debugScan(_ label: (some View).Type) in Sources/SwiftUIDebugScan/DebugScan.swift that generates labels via String(describing:).
  • Cross-reference docs between string-based and type-based debugScan variants.
• Tests:
  • Add extensive test coverage in Tests/SwiftUIDebugScanTests/ViewInspectorTests.swift for built-in, generic, and custom view types; equivalence with string-based labels; integration across view hierarchies; and explicit type requirements.
• Changelog:
  • Update CHANGELOG.md with 0.3.0 "Added" entries describing the new overload, behavior, and tests.

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