[Docs] Update Homepage content for the Kipper website

[Luna-Klatzer]

Is there an existing issue for this?

• [X] I have searched the existing issues

Current State & Issue

Currently, the homepage of the Kipper website is rather simplistic and does not contain a lot of info/content explaining the project, language etc. and only contains a small image of Kipper code (where the code is mostly still unsupported and in development).

While it does its job well, there should be new content added as well as descriptions for the project underneath the image and navigation options.

Expected Changes & Improvements

• Addition of short and accessible explanations of what Kipper is (perhaps using images and graphics)
• More content when scrolling down, showing features, project info and generally useful info that should be accessible on the first visit to the website

Referenced sites

• Homepage (https://luna-klatzer.github.io/Kipper/)