Add ResourceHub for real-time updates and implement web dashboard with REST API

- Created ResourceHub.cs for SignalR group management.
- Developed a modern web dashboard using Tailwind CSS for responsive design.
- Implemented real-time updates with SignalR for CPU, Memory, GPU, and Network usage.
- Added REST API endpoints for resource information and process management.
- Integrated process management features to view and terminate high-usage processes.
- Enhanced UI with loading spinners, notifications, and responsive tables.
- Included performance charts for historical CPU and Memory usage.
- Configured Swagger UI for API documentation.
- Established security features including process kill restrictions and API key authentication.

Configuration/MonitoringSettings.cs

@@ -2,7 +2,7 @@ namespace ResourceMonitorService.Configuration
 {
     public class MonitoringSettings
     {
-        public int UpdateIntervalMs { get; set; } = 5000; // 5 seconds
+        public int UpdateIntervalMs { get; set; } = 15000; // 15 seconds
         public int DataRetentionDays { get; set; } = 7;
         public bool EnableGpuMonitoring { get; set; } = true;
         public bool EnableDiskMonitoring { get; set; } = true;