Add base system configuration commands for agent-wdd

- Implemented new base commands for system configuration:
  * swap: Disable system swap
  * selinux: Disable SELinux
  * firewall: Stop and disable firewalld and ufw
  * sysconfig: Modify system sysctl configuration
  * ssh: Add SSH-related subcommands (key, port, config)

- Updated Config.go to initialize ConfigCache with default values
- Added new utility functions in FileUtils.go for file content manipulation
- Extended Excutor.go with HardCodeCommandExecutor method

agent-wdd/op/Excutor.go

@@ -161,6 +161,37 @@ func PipeLineCommandExecutor(pipeLineCommand [][]string) (ok bool, resultLog []s
 	return success, output
 }
 
+// HardCodeCommandExecutor 执行硬编码命令，返回执行结果和输出内容
+// hardCodeCommand: 硬编码命令，如 []string{"echo", "hello"}
+// 返回值:
+//
+//	bool - 命令是否执行成功（true为成功，false为失败）
+//	[]string - 合并后的标准输出和标准错误内容（按行分割）
+func HardCodeCommandExecutor(hardCodeCommand string) (ok bool, resultLog []string) {
+
+	log.Info("[Excutor] - start => %v", hardCodeCommand)
+
+	if hardCodeCommand == "" {
+		return false, nil
+	}
+
+	// 执行命令
+	cmd := exec.Command(hardCodeCommand)
+
+	// 执行命令并获取错误信息
+	err := cmd.Run()
+
+	// 合并输出结果
+	stdoutBuf := bytes.Buffer{}
+	stderrBuf := bytes.Buffer{}
+	cmd.Stdout = &stdoutBuf
+	cmd.Stderr = &stderrBuf
+
+	output := mergeOutput(&stdoutBuf, &stderrBuf)
+
+	return err == nil, output
+}
+
 func main() {
 	// 成功案例
 	success, output := SingleLineCommandExecutor([]string{"ls", "-l"})