Add crisp feature for enabling default quad snapping

widget/src/container.rs

@@ -451,6 +451,7 @@ pub fn draw_background<Renderer>(
                 bounds,
                 border: style.border,
                 shadow: style.shadow,
+                snap: style.snap,
             },
             style
                 .background
@@ -592,6 +593,8 @@ pub struct Style {
     pub border: Border,
     /// The [`Shadow`] of the container.
     pub shadow: Shadow,
+    /// Whether the container should be snapped to the pixel grid.
+    pub snap: bool,
 }
 
 impl Style {