Hi, I would like to work on this task.

So essentially there are two ways to implement this:

1. Make a list of the folders where system fonts are usually present in that specific OS. For example, in Linux, fonts are present in "/usr/share/fonts" or "/usr/local/share/fonts". We can scan those directories and get the list of font families. It has been implemented here in typescript. It can be used as reference.

2. Use OS specific APIs for fetching the font information. For example, Linux comes with fontconfig, Mac has CoreText etc. We can use these APIs instead of manually scanning the folders. It has been implemented in C++ in this repo and can be used for reference.

Once we implement this, we can put it in a function called BKE_get_system_fonts in blender/blenderkernel/BKE_font.h. This function will return a struct (or an array of structs) containing the catalog of fonts-families.

Initially we can just print these values on to the terminal. Once everything works properly and integrates well with blender, we can expose these values in the property editor. Then we can implement additional features like font caching, font preview etc.

If this is to be implemented, please consider also implementing it in the Video Editor Text Strips: