Implement Keyboard Shortcuts for Navigating Diffs
<!--IssueSummary start--> <details> <summary> Everyone can contribute. [Help move this issue forward](https://handbook.gitlab.com/handbook/marketing/developer-relations/contributor-success/community-contributors-workflows/#contributor-links) while earning points, leveling up and collecting rewards. </summary> - [Close this issue](https://contributors.gitlab.com/manage-issue?action=close&projectId=278964&issueIid=431260) </details> <!--IssueSummary end--> **Summary:**\ The current method for navigating between diffs in a review is cumbersome and involves using a scrollbar. To improve user experience, we propose introducing keyboard shortcuts for quick navigation between individual diffs. **Description:**\ Currently, reviewers need to use a scrollbar to navigate between different diffs in a review, which can be time-consuming and not user-friendly. Introducing keyboard shortcuts would allow for quicker and more efficient navigation, enhancing the overall review process. **Feature Request:**\ Keyboard Shortcuts for Navigation: Introduce keyboard shortcuts that allow users to quickly navigate to the next or previous diff in the review. **Justification:**\ This feature request comes from a need to make the review process more efficient and user-friendly. Keyboard shortcuts would expedite navigation and reduce reliance on the scrollbar, thereby enhancing the user experience.
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