feat(circuit): add advanced driver selection with map and AI optimization

• Add Google Maps integration to visualize driver locations in
• Add driver filtering system (all, with circuit, without circuit, with application)
• Add AI-powered driver optimization feature for smart assignment
• Add search radius slider (10-150km) for geographic filtering
• Display driver details in map popover (vehicle, schedule, availability, application status)
• Add candidate support with distinct markers on map
• Implement dual mode: manual filters vs AI optimization
• Transform simple stepper form into comprehensive driver assignment interface