Add new feature for scrolling to prev/next hunk, not just next line

[joe223]

Is your feature request related to a problem? Please describe.

scrolling to prev/next hunk in diff page, that will be more efficient instead of move cursor line by line

Describe the solution you'd like
A clear and concise description of what you want to happen.

Describe alternatives you've considered
A clear and concise description of any alternative solutions or features you've considered.

Additional context
Add any other context or screenshots about the feature request here.