chore: re-export iced row and column

This removes the custom row and column implementations and uses the iced ones directly.

src/ext.rs

@@ -19,72 +19,6 @@ impl<Message: 'static> ElementExt for crate::Element<'_, Message> {
     }
 }
 
-/// Additional methods for the [`Column`] and [`Row`] widgets.
-pub trait CollectionWidget<'a, Message: 'a>:
-    Widget<Message, crate::Theme, crate::Renderer>
-where
-    Self: Sized,
-{
-    /// Moves all the elements of `other` into `self`, leaving `other` empty.
-    #[must_use]
-    fn append<E>(self, other: &mut Vec<E>) -> Self
-    where
-        E: Into<crate::Element<'a, Message>>;
-
-    /// Appends all elements in an iterator to the widget.
-    #[must_use]
-    fn extend<E>(mut self, iterator: impl Iterator<Item = E>) -> Self
-    where
-        E: Into<crate::Element<'a, Message>>,
-    {
-        for item in iterator {
-            self = self.push(item.into());
-        }
-
-        self
-    }
-
-    /// Pushes an element into the widget.
-    #[must_use]
-    fn push(self, element: impl Into<crate::Element<'a, Message>>) -> Self;
-
-    /// Conditionally pushes an element to the widget.
-    #[must_use]
-    fn push_maybe(self, element: Option<impl Into<crate::Element<'a, Message>>>) -> Self {
-        if let Some(element) = element {
-            self.push(element.into())
-        } else {
-            self
-        }
-    }
-}
-
-impl<'a, Message: 'a> CollectionWidget<'a, Message> for crate::widget::Column<'a, Message> {
-    fn append<E>(self, other: &mut Vec<E>) -> Self
-    where
-        E: Into<crate::Element<'a, Message>>,
-    {
-        self.extend(other.drain(..).map(Into::into))
-    }
-
-    fn push(self, element: impl Into<crate::Element<'a, Message>>) -> Self {
-        self.push(element)
-    }
-}
-
-impl<'a, Message: 'a> CollectionWidget<'a, Message> for crate::widget::Row<'a, Message> {
-    fn append<E>(self, other: &mut Vec<E>) -> Self
-    where
-        E: Into<crate::Element<'a, Message>>,
-    {
-        self.extend(other.drain(..).map(Into::into))
-    }
-
-    fn push(self, element: impl Into<crate::Element<'a, Message>>) -> Self {
-        self.push(element)
-    }
-}
-
 pub trait ColorExt {
     /// Combines color with background to create appearance of transparency.
     #[must_use]