Add support for 3D files

[yw4z]

I'm sure there are many more format but main ones for generic use
STL and OBJ
STL quite popular for 3D printing
Thanks for your efforts

[Xanashi]

This won't be an easy task to add support for, unfortunately.
It will most likely require additional 3D parsing and rendering libraries to make these filetypes work with Icaros.
I'll make sure to look into it, however I can't promise anything at this point in time.

[yw4z]

currently using this one for STL https://papas-best.com/stlthumbnails_en it just 53 kb. ofc i prefer single app for thumbnails. icaros already working great

[Xanashi]

Hmm... that does change my mind. Maybe it can be done without too much code. Maybe with OpenGL?
I'll see what I can find out.

With that said, the software you just posted, honestly looks great. Supports a ton of STL features and is fast as well.
Supporting STL in Icaros might be a bit superfluous?

[yw4z]

actually showing colors etc a bit extra features. most helpful is showing basic shape. same with OBJ format. icaros is aio thumbnails generator this one would be nice addition. ofc you may want to focus other things