### What problem does this PR solve?
- Adjust UI styles in **Dataset** pages.
- Adjust several shared components styles
- Modify files and directory structure in `src/layouts`
### Type of change
- [x] Refactoring
### What problem does this PR solve?
Update **Chat** UI:
- Align to the design.
- Update `<AudioButton>` visualizer logic.
- Fix keyboard navigation issue.
### Type of change
- [x] Refactoring
### What problem does this PR solve?
Fix: Some bugs
- Issues and style fixes related to the 'Memory' page
- Data source icon replacement
- Build optimization
### Type of change
- [x] Bug Fix (non-breaking change which fixes an issue)
### What problem does this PR solve?
Feat: Using IconFont as an additional icon library #3221
### Type of change
- [x] New Feature (non-breaking change which adds functionality)
