feat: Add comprehensive cross-reference resolution system to FernRenderer#7

devin-ai-integration[bot] wants to merge 1 commit intooverhaulfern-api/sphinx-autodoc2-fern:overhaulfrom

devin/1762123459-cross-reference-resolutionfern-api/sphinx-autodoc2-fern:devin/1762123459-cross-reference-resolutionCopy head branch name to clipboard