Refactor monitoring package: remove platform-specific files and consolidate OS detection and process counting logic

- Deleted os_windows.go and process_windows.go, replacing them with platform-agnostic implementations in unit directory.
- Removed Linux-specific process counting logic from process_linux.go and integrated it into unit.
- Consolidated uptime and OS name retrieval into unit files for better organization.
- Updated update mechanism to use global variables for current version and repository.
- Introduced command-line flags for configuration, including disabling auto-update and web SSH.
- Implemented WebSocket connection handling and terminal interaction for both Unix and Windows systems.
- Added basic info upload functionality to server package, enhancing monitoring capabilities.

monitoring/unit/load.go

@@ -0,0 +1,25 @@
+package monitoring
+
+import (
+	"github.com/shirou/gopsutil/load"
+)
+
+type LoadInfo struct {
+	Load1  float64 `json:"load_1"`
+	Load5  float64 `json:"load_5"`
+	Load15 float64 `json:"load_15"`
+}
+
+func Load() LoadInfo {
+
+	avg, err := load.Avg()
+	if err != nil {
+		return LoadInfo{Load1: 0, Load5: 0, Load15: 0}
+	}
+	return LoadInfo{
+		Load1:  avg.Load1,
+		Load5:  avg.Load5,
+		Load15: avg.Load15,
+	}
+
+}