feat: 添加对Darwin和FreeBSD的GPU及操作系统名称获取功能

monitoring/unit/os_darwin.go

@@ -0,0 +1,21 @@
+//go:build darwin
+// +build darwin
+
+package monitoring
+
+import (
+	"os/exec"
+	"strings"
+)
+
+// OSName returns the name of the operating system on Darwin (macOS)
+func OSName() string {
+	cmd := exec.Command("sw_vers", "-productName")
+	output, err := cmd.Output()
+	if err != nil {
+		return "macOS"
+	}
+
+	name := strings.TrimSpace(string(output))
+	return name
+}