docc2json: Convert Apple DocC Documentation to Web-Friendly JSON Schema

Summary

docc2json is a Go command-line tool that converts Apple DocC documentation output into a clean, structured JSON schema optimized for web documentation sites and external tooling. It addresses the limitation that Apple DocC's native JSON output is tightly coupled to Xcode's renderer, making it difficult to reuse for custom documentation sites. The tool focuses on reconstructing method signatures, extracting complete documentation, resolving cross-references, filtering access levels, and producing a schema suitable for SDK documentation outside the Apple ecosystem.