Implement Tooltip component and enhance DeepSeek Sparse Attention page with interactive elements

- Introduced a Tooltip component for improved user interaction and information delivery.
- Integrated tooltips into various sections to provide detailed explanations of key concepts, such as token processing and the Lightning Indexer.
- Enhanced visual examples with tooltips to clarify the efficiency gains and complexity transformations in the DeepSeek model.
- Improved overall user engagement by making technical content more accessible and informative.

Author: vukrosic