Of course it is possible but needs a bit of programming to manage the content for the parts of the accordion. You should go through the silverstripe-lessons to get familiar with the system.
Soon you will like it
You could add the files in on the init() function of PageController using the Requirements class. I’ve used that type of accordion a few times and that’s how I do it. But you need to manage the content from inside whichever template you’re using.