Toggle & Switch (#21979)

![CleanShot 2024-12-13 at 11 27
39@2x](https://github.com/user-attachments/assets/7c7828c0-c5c7-4dc6-931e-722366d4f15a)

- Adds the Switch component
- Updates `Selected`, `Selectable` -> `ToggleState`, `Toggleable`
- Adds `checkbox` and `switch` functions to align better with other
elements in our layout system.

We decided not to merge Switch and Checkbox. However, in a followup I'll
introduce a Toggle or AnyToggle enum so we can update
`CheckboxWithLabel` -> `ToggleWithLabel` as this component will work
exactly the same with either a Checkbox or a Switch.

Release Notes:

- N/A

crates/ui/src/components/button/toggle_button.rs

@@ -57,9 +57,9 @@ impl ToggleButton {
     }
 }
 
-impl Selectable for ToggleButton {
-    fn selected(mut self, selected: bool) -> Self {
-        self.base = self.base.selected(selected);
+impl Toggleable for ToggleButton {
+    fn toggle_state(mut self, selected: bool) -> Self {
+        self.base = self.base.toggle_state(selected);
         self
     }
 }