About adding tcping

**Describe your feature request**:
First of all, thank you all for contributing to the open source software, which works very well.
But I found that we often need to tcping during the process, I have been looking for software that can realize this function. networkManager makes me see the hope, so can you add a tcping function that?
I think this would be a very useful feature.
Thanks again for contributing to open source software!

此請求未指出檔案、進入點、測試或驗收標準。先找出現有的 NetworkManager ping 相關功能，並在估算工作量之前，與維護者釐清 tcping 預期的行為、介面和完成標準。

由索引模型根據 Issue 內容生成。