GDShader error checking support

[Foyezes]

Is it possible to implement gdshader error checking? Currently I have to switch to Godot to check if there's an error. It would be really nice to have that feature.

[atirutw]

This is something that the LSP server (i.e. the Godot side) have to provide IIRC unless the authors of the extension wanna use a separate LSP server, of which there are none AFAIK.

[Foyezes]

Is it hard to do that for their side? I'm clueless here sorry

[Calinou]

This is being tracked in godotengine/godot-proposals#14490. It's definitely nontrivial.