Feat: add hidden mode and new documentation

plugins/nih-plug-egui/src/resizable_window.rs

@@ -14,6 +14,7 @@ pub struct ResizableWindow {
 }
 
 impl ResizableWindow {
+    /// Create a resizable window with the given ID source.
     pub fn new(id_source: impl std::hash::Hash) -> Self {
         Self {
             id: Id::new(id_source),
@@ -28,6 +29,7 @@ impl ResizableWindow {
         self
     }
 
+    /// Draw contents inside the resizable window, adding a drag corner.
     pub fn show<R>(
         self,
         context: &Context,
@@ -65,6 +67,7 @@ impl ResizableWindow {
     }
 }
 
+/// Draw diagonal lines in the corner as a resize affordance.
 pub fn paint_resize_corner(ui: &Ui, response: &Response) {
     let stroke = ui.style().interact(response).fg_stroke;
 

plugins/nih-plug-egui/src/widgets/param_slider.rs

@@ -1,3 +1,5 @@
+//! Horizontal parameter slider widget with drag, granular drag, and text entry.
+
 use std::sync::{Arc, LazyLock};
 
 use egui_baseview::egui::emath::GuiRounding;