settings ui: Improve numeric stepper component interface (#36513)

This is the first step to allowing users to type into a numeric stepper
to set its value. This PR makes the numeric stepper take in a generic
type `T` where T: `NumericStepperType`

```rust
pub trait NumericStepperType:
    Display
    + Add<Output = Self>
    + Sub<Output = Self>
    + Copy
    + Clone
    + Sized
    + PartialOrd
    + FromStr
    + 'static
{
    fn default_format(value: &Self) -> String {
        format!("{}", value)
    }
    fn default_step() -> Self;
    fn large_step() -> Self;
    fn small_step() -> Self;
    fn min_value() -> Self;
    fn max_value() -> Self;
}
```

This allows setting of step sizes and min/max values as well as making
the component easier to use.

cc @danilo-leal 

Release Notes:

- N/A

---------

Co-authored-by: Mikayla Maki <mikayla.c.maki@gmail.com>
Co-authored-by: Gaauwe Rombouts <mail@grombouts.nl>

crates/editor/src/editor_settings_controls.rs

@@ -5,8 +5,7 @@ use project::project_settings::ProjectSettings;
 use settings::{EditableSettingControl, Settings, SettingsContent};
 use theme::{FontFamilyCache, FontFamilyName, ThemeSettings};
 use ui::{
-    CheckboxWithLabel, ContextMenu, DropdownMenu, NumericStepper, SettingsContainer, SettingsGroup,
-    prelude::*,
+    CheckboxWithLabel, ContextMenu, DropdownMenu, SettingsContainer, SettingsGroup, prelude::*,
 };
 
 use crate::EditorSettings;
@@ -129,21 +128,12 @@ impl EditableSettingControl for BufferFontSizeControl {
 
 impl RenderOnce for BufferFontSizeControl {
     fn render(self, _window: &mut Window, cx: &mut App) -> impl IntoElement {
-        let value = Self::read(cx);
+        let _value = Self::read(cx);
 
         h_flex()
             .gap_2()
             .child(Icon::new(IconName::FontSize))
-            .child(NumericStepper::new(
-                "buffer-font-size",
-                value.to_string(),
-                move |_, _, cx| {
-                    Self::write(value - px(1.), cx);
-                },
-                move |_, _, cx| {
-                    Self::write(value + px(1.), cx);
-                },
-            ))
+            .child(div()) // TODO: Re-evaluate this whole crate once settings UI is complete
     }
 }