Generate HTML side-by-side diffs for multiline field changes in Version documents

Generate HTML side-by-side diffs for multiline field changes in Version documents: a task in bird-critic-1.5-full-300 (Harbor dataset). The Frappe codebase is at /workspace/repo . This is a Python web framework (ERPNext's base). Services and dependencies are pre-installed.

The task

The Frappe codebase is at `/workspace/repo`. This is a Python web framework (ERPNext's base). Services and dependencies are pre-installed.

Part of kochsnow/bird-critic-1.5-full-300.