Add tudaexercise template

[FussballAndy]

tudaexercise typst template

Missing features

• Proper coloring, change title text color based on accent color etc.
• Add colorback option to make title not have color background
• Add documentation

Optionals

• Darkmode. Similar to Rubens Latex template

[FussballAndy]

Ignore the commit history had some problems with git, we should just squash merge this PR

[JeyRunner]

This could be merged with tud-heading-with-lines in headings.typ, it is currently not used by the thesis template. But you can also keep it separate for now if you want.

[FussballAndy]

I put the section functions into headings.typ. For now I also left tud-heading-with-lines as I am not sure if we should leave it for future use or not.

[JeyRunner]

Nice, it looks good.
I added some review comments.

[FussballAndy]

Most review points should be fixed now. I also added a few more utilities for coloring and working with dicts/default values.
One thing I am unsure about is whether we should give the user more customization options for coloring, so letting the user also be able to overwrite the background/text color from within the template. I am also thinking about adding a more general design state in which all design options like colors get stored. This will mostly just be used for the sections but will also give the user a way to access the colors used by the template.

[JeyRunner]

Looks pretty nice 👍
Regarding the customization options, you can add custom background/text colouring if you want, but I am not sure if it is really required. I would generally go for: simpler = better. But if it is simple to implement its fine I guess.
In general, I would avoid using state if it is not needed. But your use case of giving the user access to computed colours makes sense (e.g. to make figures that match the accent colour). I would propose to make this design state just one way so that the user can't accidentally mess up the design by overwriting the state (and this way we effectively don't have state as long as the user does not read it). So essentially passing all computed colours to the sub-functions by value, but also writing the colours to the separate design state (but never read from it). What do you think?

Btw, you can also add your name to the typst.toml, so that you will be displayed as an author on the Universe website too.

[FussballAndy]

This should be mostly it. Though I am unsure if we should use the same README.md for both templates. Especially hence the images in these READMEs will also break in the typst packages repository. But also because (at least the current README) is rather specific to the thesis template.