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/file_finder/src/file_finder.rs

@@ -1228,7 +1228,7 @@ impl PickerDelegate for FileFinderDelegate {
                 .start_slot::<Icon>(file_icon)
                 .end_slot::<AnyElement>(history_icon)
                 .inset(true)
-                .selected(selected)
+                .toggle_state(selected)
                 .child(
                     h_flex()
                         .gap_2()

crates/file_finder/src/new_path_prompt.rs

@@ -414,7 +414,7 @@ impl PickerDelegate for NewPathDelegate {
             ListItem::new(ix)
                 .spacing(ListItemSpacing::Sparse)
                 .inset(true)
-                .selected(selected)
+                .toggle_state(selected)
                 .child(LabelLike::new().child(m.styled_text(self.project.read(cx), cx))),
         )
     }

crates/file_finder/src/open_path_prompt.rs

@@ -283,7 +283,7 @@ impl PickerDelegate for OpenPathDelegate {
             ListItem::new(ix)
                 .spacing(ListItemSpacing::Sparse)
                 .inset(true)
-                .selected(selected)
+                .toggle_state(selected)
                 .child(LabelLike::new().child(candidate.string.clone())),
         )
     }