Automate settings registration (#42238)

Release Notes:

- N/A

---------

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

crates/vim/src/test/vim_test_context.rs

@@ -25,10 +25,6 @@ impl VimTestContext {
             git_ui::init(cx);
             crate::init(cx);
             search::init(cx);
-            workspace::init_settings(cx);
-            language::init(cx);
-            editor::init_settings(cx);
-            project::Project::init_settings(cx);
             theme::init(theme::LoadThemes::JustBase, cx);
             settings_ui::init(cx);
         });

crates/vim/src/vim.rs

@@ -40,6 +40,7 @@ use normal::search::SearchSubmit;
 use object::Object;
 use schemars::JsonSchema;
 use serde::Deserialize;
+use settings::RegisterSetting;
 pub use settings::{
     ModeContent, Settings, SettingsStore, UseSystemClipboard, update_settings_file,
 };
@@ -268,8 +269,6 @@ actions!(
 
 /// Initializes the `vim` crate.
 pub fn init(cx: &mut App) {
-    vim_mode_setting::init(cx);
-    VimSettings::register(cx);
     VimGlobals::register(cx);
 
     cx.observe_new(Vim::register).detach();
@@ -1943,6 +1942,7 @@ impl Vim {
     }
 }
 
+#[derive(RegisterSetting)]
 struct VimSettings {
     pub default_mode: Mode,
     pub toggle_relative_line_numbers: bool,