This has nothing to do with PS. An image is just an image. any additional functionality is added by the player and its associated authoring software. I.e. in order to have "hotspots", you have to define them in the YouTube, Facebook or whatever media settings and/or use an additional standalone software thart does this in a way it would be compatible with those players. This is all meta stuff inside custom data streams in the video, none of which you can create in PS.