presentation-template VS markdown-presentation

Before explaining the second line, I should probably elaborate a bit on the idea of how to integrate the graphviz images. There is a diagrams folder in each of my presentations, which will contain files with a .dot ending. These files contain the graphviz instructions. make should create a file with a .dot.svg ending for each of the .dot files in the same folder, which in turn can be included in the presentation. So the presentation will include some markdown like this:

Therefore I was looking for another solution that allows me to reuse code without using NPM. I like other package managers much better, but using them might feel weird, since they are targeted at other programming languages, and I am not really aware of a language-independent package manager. So I decided to just use Git submodules for these files. So I created a separate repository for the shared presentation code including the CSS, JS, and a small markdown file that allows me to test the package independently. There is also a Makefile included that knows how to build the presentation since I also don't want to copy that information into all my presentations (otherwise there might some adapting be necessary every time the package is restructured).