Automate settings registration (#42238)

Release Notes:

- N/A

---------

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

crates/language_models/src/language_models.rs

@@ -28,7 +28,6 @@ use crate::provider::x_ai::XAiLanguageModelProvider;
 pub use crate::settings::*;
 
 pub fn init(user_store: Entity<UserStore>, client: Arc<Client>, cx: &mut App) {
-    crate::settings::init_settings(cx);
     let registry = LanguageModelRegistry::global(cx);
     registry.update(cx, |registry, cx| {
         register_language_model_providers(registry, user_store, client.clone(), cx);

crates/language_models/src/settings.rs

@@ -1,8 +1,7 @@
 use std::sync::Arc;
 
 use collections::HashMap;
-use gpui::App;
-use settings::Settings;
+use settings::RegisterSetting;
 
 use crate::provider::{
     anthropic::AnthropicSettings, bedrock::AmazonBedrockSettings, cloud::ZedDotDevSettings,
@@ -12,11 +11,7 @@ use crate::provider::{
     vercel::VercelSettings, x_ai::XAiSettings,
 };
 
-/// Initializes the language model settings.
-pub fn init_settings(cx: &mut App) {
-    AllLanguageModelSettings::register(cx);
-}
-
+#[derive(Debug, RegisterSetting)]
 pub struct AllLanguageModelSettings {
     pub anthropic: AnthropicSettings,
     pub bedrock: AmazonBedrockSettings,