Update assistant config UI (#15630)

![CleanShot 2024-08-01 at 12 55
01@2x](https://github.com/user-attachments/assets/f9ed44ba-6bff-4805-ad71-2e3538315e57)

- Remove assisstant_description for now.
- Updates assistant config UI
- Updates Ollama and zed.dev provider UIs
- Updates download icon

Release Notes:

- N/A

---------

Co-authored-by: Marshall Bowers <1486634+maxdeviant@users.noreply.github.com>
Co-authored-by: Marshall Bowers <elliott.codes@gmail.com>

crates/language_model/src/language_model.rs

@@ -7,9 +7,11 @@ mod role;
 pub mod settings;
 
 use anyhow::Result;
-use client::Client;
+use client::{Client, UserStore};
 use futures::{future::BoxFuture, stream::BoxStream};
-use gpui::{AnyView, AppContext, AsyncAppContext, FocusHandle, SharedString, Task, WindowContext};
+use gpui::{
+    AnyView, AppContext, AsyncAppContext, FocusHandle, Model, SharedString, Task, WindowContext,
+};
 pub use model::*;
 use project::Fs;
 pub(crate) use rate_limiter::*;
@@ -20,9 +22,14 @@ use schemars::JsonSchema;
 use serde::de::DeserializeOwned;
 use std::{future::Future, sync::Arc};
 
-pub fn init(client: Arc<Client>, fs: Arc<dyn Fs>, cx: &mut AppContext) {
+pub fn init(
+    user_store: Model<UserStore>,
+    client: Arc<Client>,
+    fs: Arc<dyn Fs>,
+    cx: &mut AppContext,
+) {
     settings::init(fs, cx);
-    registry::init(client, cx);
+    registry::init(user_store, client, cx);
 }
 
 pub trait LanguageModel: Send + Sync {