Feat: add hidden mode and new documentation

plugins/egui-baseview/src/renderer/opengl.rs

@@ -1,8 +1,11 @@
+//! OpenGL renderer errors and submodule.
+
 use egui_glow::PainterError;
 use thiserror::Error;
 
 pub mod renderer;
 
+/// Errors from OpenGL context or painter initialization.
 #[derive(Error, Debug)]
 pub enum OpenGlError {
     #[error("Failed to get baseview's GL context")]