Add an icon for typst (.typ) #703
Description
Add the typst-t icon for .typ files.
Typst A new markup-based typesetting system that is powerful and easy to learn. It can be seen as an alternative to latex.
I think it is popular enough with the Typst LSP Extension getting 45.9K downloads.
I asked for permissions from the authors, and it is a valid use of their right https://typst.app/legal/brand.
The icon looks like
