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.

Controllers/ResourceController.cs

@@ -0,0 +1,173 @@
+using Microsoft.AspNetCore.Mvc;
+using ResourceMonitorService.Models;
+using ResourceMonitorService.Services;
+using System.Diagnostics;
+
+namespace ResourceMonitorService.Controllers
+{
+    [ApiController]
+    [Route("api/[controller]")]
+    public class ResourceController : ControllerBase
+    {
+        private readonly IResourceMonitorService _resourceMonitorService;
+        private readonly ISystemInfoService _systemInfoService;
+        private readonly ILogger<ResourceController> _logger;
+
+        public ResourceController(
+            IResourceMonitorService resourceMonitorService,
+            ISystemInfoService systemInfoService,
+            ILogger<ResourceController> logger)
+        {
+            _resourceMonitorService = resourceMonitorService;
+            _systemInfoService = systemInfoService;
+            _logger = logger;
+        }
+
+        [HttpGet("usage")]
+        public async Task<ActionResult<ResourceUsage>> GetResourceUsage()
+        {
+            try
+            {
+                var usage = await _resourceMonitorService.GetResourceUsageAsync();
+                return Ok(usage);
+            }
+            catch (Exception ex)
+            {
+                _logger.LogError(ex, "Error getting resource usage");
+                return StatusCode(500, "Internal server error");
+            }
+        }
+
+        [HttpGet("system-info")]
+        public async Task<ActionResult<SystemInfo>> GetSystemInfo()
+        {
+            try
+            {
+                var systemInfo = await _systemInfoService.GetSystemInfoAsync();
+                return Ok(systemInfo);
+            }
+            catch (Exception ex)
+            {
+                _logger.LogError(ex, "Error getting system info");
+                return StatusCode(500, "Internal server error");
+            }
+        }
+
+        [HttpGet("cpu")]
+        public async Task<ActionResult<CpuUsage>> GetCpuUsage()
+        {
+            try
+            {
+                var cpuUsage = await _resourceMonitorService.GetCpuUsageAsync();
+                return Ok(cpuUsage);
+            }
+            catch (Exception ex)
+            {
+                _logger.LogError(ex, "Error getting CPU usage");
+                return StatusCode(500, "Internal server error");
+            }
+        }
+
+        [HttpGet("memory")]
+        public async Task<ActionResult<MemoryUsage>> GetMemoryUsage()
+        {
+            try
+            {
+                var memoryUsage = await _resourceMonitorService.GetMemoryUsageAsync();
+                return Ok(memoryUsage);
+            }
+            catch (Exception ex)
+            {
+                _logger.LogError(ex, "Error getting memory usage");
+                return StatusCode(500, "Internal server error");
+            }
+        }
+
+        [HttpGet("gpu")]
+        public async Task<ActionResult<GpuUsage>> GetGpuUsage()
+        {
+            try
+            {
+                var gpuUsage = await _resourceMonitorService.GetGpuUsageAsync();
+                return Ok(gpuUsage);
+            }
+            catch (Exception ex)
+            {
+                _logger.LogError(ex, "Error getting GPU usage");
+                return StatusCode(500, "Internal server error");
+            }
+        }
+
+        [HttpGet("disks")]
+        public async Task<ActionResult<List<DiskUsage>>> GetDiskUsage()
+        {
+            try
+            {
+                var diskUsage = await _resourceMonitorService.GetDiskUsageAsync();
+                return Ok(diskUsage);
+            }
+            catch (Exception ex)
+            {
+                _logger.LogError(ex, "Error getting disk usage");
+                return StatusCode(500, "Internal server error");
+            }
+        }
+
+        [HttpGet("network")]
+        public async Task<ActionResult<NetworkUsage>> GetNetworkUsage()
+        {
+            try
+            {
+                var networkUsage = await _resourceMonitorService.GetNetworkUsageAsync();
+                return Ok(networkUsage);
+            }
+            catch (Exception ex)
+            {
+                _logger.LogError(ex, "Error getting network usage");
+                return StatusCode(500, "Internal server error");
+            }
+        }
+
+        [HttpGet("processes")]
+        public async Task<ActionResult<List<ProcessInfo>>> GetTopProcesses([FromQuery] int count = 10)
+        {
+            try
+            {
+                var processes = await _resourceMonitorService.GetTopProcessesAsync(count);
+                return Ok(processes);
+            }
+            catch (Exception ex)
+            {
+                _logger.LogError(ex, "Error getting top processes");
+                return StatusCode(500, "Internal server error");
+            }
+        }
+
+        [HttpPost("kill-process/{processId}")]
+        public ActionResult KillProcess(int processId)
+        {
+            try
+            {
+                var process = Process.GetProcessById(processId);
+                if (process == null)
+                {
+                    return NotFound($"Process with ID {processId} not found");
+                }
+
+                process.Kill();
+                _logger.LogInformation($"Process {process.ProcessName} (ID: {processId}) was terminated");
+                
+                return Ok(new { message = $"Process {process.ProcessName} (ID: {processId}) was terminated successfully" });
+            }
+            catch (ArgumentException)
+            {
+                return NotFound($"Process with ID {processId} not found");
+            }
+            catch (Exception ex)
+            {
+                _logger.LogError(ex, $"Error killing process {processId}");
+                return StatusCode(500, "Internal server error");
+            }
+        }
+    }
+}