1. remove Chinese doc. The content is out of data and we don't have enough time to maintain it. 2. Update feature support matrix. Refresh the content and add V1 status. --------- Signed-off-by: wangxiyuan <wangxiyuan1007@gmail.com> Signed-off-by: Yikun Jiang <yikunkero@gmail.com> Co-authored-by: Yikun Jiang <yikunkero@gmail.com>