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/process_windows.go

@@ -0,0 +1,56 @@
+//go:build windows
+// +build windows
+
+package monitoring
+
+import (
+	"syscall"
+	"unsafe"
+)
+
+// ProcessCount returns the number of running processes
+func ProcessCount() (count int) {
+	return processCountWindows()
+
+}
+
+// processCountWindows counts processes using Windows API
+func processCountWindows() (count int) {
+	// Load kernel32.dll
+	kernel32, err := syscall.LoadLibrary("kernel32.dll")
+	if err != nil {
+		return 0
+	}
+	defer syscall.FreeLibrary(kernel32)
+
+	// Get EnumProcesses function
+	enumProcesses, err := syscall.GetProcAddress(kernel32, "K32EnumProcesses")
+	if err != nil {
+		return 0
+	}
+
+	// Prepare buffer for process IDs
+	const maxProcesses = 1024
+	pids := make([]uint32, maxProcesses)
+	var bytesReturned uint32
+
+	// Call EnumProcesses
+	ret, _, _ := syscall.SyscallN(
+		uintptr(enumProcesses),
+		uintptr(unsafe.Pointer(&pids[0])),
+		uintptr(len(pids)*4),
+		uintptr(unsafe.Pointer(&bytesReturned)),
+	)
+
+	if ret == 0 {
+		return 0
+	}
+
+	// Count valid PIDs
+	count = int(bytesReturned) / 4 // bytesReturned is size in bytes, divide by 4 for uint32 count
+	if count > maxProcesses {
+		count = maxProcesses
+	}
+
+	return count
+}