Support embeded video player for asciinema #77
Description
There are a few demo videos recorded by Ratify maintainers using asciinema, such as #75. Currently, playing the asciinema videos will jump to asciinema website. Ideally, we expect the video player can be embedded on the Ratify website. Asciinema has this capability but we will need to investigate https://docs.asciinema.org/manual/server/embedding/