This is Panopto repository plugin, a compulsory part of Panopto resource module plugin developed by Lancaster University to simplify using Panopto video recordings in Moodle courses. It provides navigation through Panopto directory tree, making the process of selecting the video easier. Also it provides abstraction layer for communication with Panopto server, not only for purposes of directory listing that plugin provides, but for other queries Panopto resource module needs to make.
This plugin requires Panopto video platform, which is a commercial software. For more details see https://www.panopto.com/
Please read Panopto resource module documentation for details on this resource module and unique functionality features it provides.