[Phase 1] Update ResourceList for Channel Management

[halsk]

Description

Enhance the ResourceList component to include action buttons for channel management and analysis.

Tasks

• Update ResourceList.tsx to identify Slack channel resources
• Add action buttons for channel management:
  • View/analyze channel
  • Select for analysis
• Add visual indicators for channels marked for analysis
• Implement filtering to show only channel resources when needed
• Add navigation to channel selection and analysis pages

References

• Based on strategy document in PR Add Channel Analysis UI Strategy Document #171
• Files to modify:
  • frontend/src/components/integration/ResourceList.tsx

Acceptance Criteria

• ResourceList shows appropriate actions for channel resources
• Users can navigate to channel analysis from the resource list
• Visual indicators show which channels are selected for analysis
• Consistent styling with existing UI components