Add image gallery which previews the themes

[Siedlerchr]

It would be nice to have a preview of the theme in this repository!

[Siedlerchr]

possible idea https://github.com/opieters/jekyll-image-gallery-example/tree/gh-pages
https://dmnfarrell.github.io/software/jekyll-galleries

I was thinking about this idea too!
I'm not a programmer so I hope somebody can make this.
I keep posting the screenshots here.

[DiamondMyK]

Hi, I'm new to open source and want to try to solve some simple problems. Can you assign this issue to me? I would appreciate it!

[jeanprbt]

Hi, I am a university student in Software Engineering Fundamentals at KTH, Stockholm. We, as a group of 5 students, would like to work on this issue. Could you assign us ? (@jeanprbt, @rickardo-cornelli, @Lola20b, @Zaina-ram, @Raahitya-14)

[Siedlerchr]

I can only assign one person, but you are welcome to work on a solution!