Automate settings registration (#42238)

Release Notes:

- N/A

---------

Co-authored-by: Nia <nia@zed.dev>

crates/git_ui/src/git_panel_settings.rs

@@ -2,7 +2,7 @@ use editor::EditorSettings;
 use gpui::Pixels;
 use schemars::JsonSchema;
 use serde::{Deserialize, Serialize};
-use settings::{Settings, StatusStyle};
+use settings::{RegisterSetting, Settings, StatusStyle};
 use ui::{
     px,
     scrollbars::{ScrollbarVisibility, ShowScrollbar},
@@ -14,7 +14,7 @@ pub struct ScrollbarSettings {
     pub show: Option<ShowScrollbar>,
 }
 
-#[derive(Debug, Clone, PartialEq)]
+#[derive(Debug, Clone, PartialEq, RegisterSetting)]
 pub struct GitPanelSettings {
     pub button: bool,
     pub dock: DockPosition,