Добавил метод для получения нагрузки на процессор

Backend/MonitorAgent/MonitorAgent.Application/Services/RawCpuMonitorService.cs

@@ -0,0 +1,19 @@
+using MonitorAgent.Core.Abstraction;
+using MonitorAgent.Core.Models;
+
+namespace MonitorAgent.Application.Services;
+
+public class RawCpuMonitorService : ICpuMonitorService
+{
+    public async Task<RawCpuStatsCollection> ParseRawCpuStatsAsync(CancellationToken cancellationToken = default)
+    {
+        var raw = await File.ReadAllLinesAsync("/proc/stat", cancellationToken);
+        
+        var total = RawCpuStats.Parse(raw[0]);
+        var cores = new List<RawCpuStats>();
+        for (int i = 1; i < raw.Length && raw[i].StartsWith("cpu"); i++)
+            cores.Add(RawCpuStats.Parse(raw[i]));
+
+        return new RawCpuStatsCollection(total, cores);
+    }
+}