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/os_windows.go

@@ -0,0 +1,23 @@
+//go:build windows
+// +build windows
+
+package monitoring
+
+import (
+	"golang.org/x/sys/windows/registry"
+)
+
+func OSName() string {
+	key, err := registry.OpenKey(registry.LOCAL_MACHINE, `SOFTWARE\Microsoft\Windows NT\CurrentVersion`, registry.QUERY_VALUE)
+	if err != nil {
+		return "Microsoft Windows"
+	}
+	defer key.Close()
+
+	productName, _, err := key.GetStringValue("ProductName")
+	if err != nil {
+		return "Microsoft Windows"
+	}
+
+	return productName
+}