Add a thesis exposé example

[hochleitner]

In our scientific writing courses in the bachelor programs, students create an exposé for their bachelor's thesis. They'll use the Hagenberg Thesis template to write their thesis, so we also have them write their exposé using it as well.

Since the bachelor's thesis is, for many, the first experience with scientific writing, we give them an exposé example document. That way, they know what's expected of them and what the structure of an exposé looks like. And while working on it, they also become familiar with the template. The document is located here: https://github.com/Digital-Media/MTD248-WA4.

@imagingbook, how do you feel about including this example in Hagenberg Thesis? It could become HgbThesisExposeDE (if you don't like the content, we can also come up with something else).

Including it would make it less confusing because, at the moment, there are two repos. Plus, it would get updated with the latest additions from the package automatically. Also, I think that an exposé is something that many students could benefit from.

[imagingbook]

Sure, can't hurt. Pls. add it to documents and update the README file accordingly. The build script should need no changes.

[hochleitner]

Alright, I will add this to the milestone and include it in the release for SS 2023. I created issue #155 from this discussion to track it and discuss it further.