Expose ZIP stat information
Expose ZIP stat information

Add getStat to OC\Archive\Zip
Required to be able to read the mtime and other metadata.
To give direct access to mtime

Signed-off-by: Vincent Petry <87e1f221a672a14a323e57bb65eaea19d3ed3804@nextcloud.com>
Co-authored-by: Côme Chilliet <65266482bbd411837c7b5a3a962855e6c075a719@nextcloud.com>

nextcloud/server,nextcloud/server,nextcloud/server,nextcloud/server