Implement canvas::Path::rectangle helper method

wgpu/src/widget/canvas/path.rs

@@ -7,6 +7,8 @@ mod builder;
 pub use arc::Arc;
 pub use builder::Builder;
 
+use iced_native::{Point, Size};
+
 /// An immutable set of points that may or may not be connected.
 ///
 /// A single [`Path`] can represent different kinds of 2D shapes!
@@ -33,6 +35,14 @@ impl Path {
         builder.build()
     }
 
+    /// Creates a new [`Path`] representing a rectangle given its top-left
+    /// corner coordinate and its `Size`.
+    ///
+    /// [`Path`]: struct.Path.html
+    pub fn rectangle(top_left: Point, size: Size) -> Self {
+        Self::new(|p| p.rectangle(top_left, size))
+    }
+
     #[inline]
     pub(crate) fn raw(&self) -> &lyon::path::Path {
         &self.raw