Creates a file on the SFTP server.
int CreateFile(const QString& qsFileName);
This method creates an empty file on the server with the name specified by the FileName parameter.
To upload a file with content use Upload instead.
This method returns a result code; 0 indicates success, while a non-zero error code indicates that this method encountered an error during its execution. If an error occurs, the GetLastError() method can be called to retrieve the associated error message. (Note: This method's result code can also be obtained by calling the GetLastErrorCode() method after it returns.)