Attributes support in LineArt modifier

In my recent project I came across a need to use grease pencil's LineArt modifier on GeometryNodes generated meshes

But currently GN does not preserve freestyle edge mark (well...it kinda does but only before realizing instances, any further editing will clear freestyle edge mark), and LA does not support attributes either

So basically there's no way to precisely control which edges to generate line art from using GN

This can be solved by adding support for either freestyle edge mark editing in GN or attributes as an edge type in LA

I prefer the latter since GN has more control over attributes thus will bring deeper interaction between GN and LA