feat: add workflow components for enhanced user interaction and monitoring

- create WorkflowInfoPanel to display workflow status, steps, and duration.
- implement WorkflowInputPanel for user input with example prompts and quick run functionality.
- add WorkflowLegend to provide visual indicators for workflow states.
- develop WorkflowNode to represent individual steps in the workflow with status indicators and action buttons.
- introduce WorkflowOutput to show real-time output and logs from the workflow execution.
- create WorkflowProgressPanel to display progress events and their statuses.
- implement WorkflowSuspendDialog for user approval during workflow pauses.