ssh2-sftp-client add method (#45881)
ssh2-sftp-client add method (#45881)

* ssh2-sftp-client add method

* Update index.d.ts
georgemarshall/DefinitelyTyped,mcliment/DefinitelyTyped,dsebastien/DefinitelyTyped,dsebastien/DefinitelyTyped,georgemarshall/DefinitelyTyped,georgemarshall/DefinitelyTyped,markogresak/DefinitelyTyped,georgemarshall/DefinitelyTyped