Adding slides for site generation

To avoid using too much CI, slides in HTML have been generated beforehand and stored in git in static/slides. A README has been added as a memo.

Created by  Alexis Praga  on February 25, 2024
OFECOC2S3D55N3N5OJDLLPDDMVC4GKL5SIUWAGDKKWKLU4OMTHUAC
Change contents