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/editor/src/hunk_diff.rs

@@ -726,7 +726,7 @@ impl Editor {
                                                             .shape(IconButtonShape::Square)
                                                             .icon_size(IconSize::Small)
                                                             .style(ButtonStyle::Subtle)
-                                                            .selected(
+                                                            .toggle_state(
                                                                 hunk_controls_menu_handle
                                                                     .is_deployed(),
                                                             )