client: Add CloudUserStore (#35370)

This PR adds a new `CloudUserStore` for storing information about the
user retrieved from Cloud instead of Collab.

Release Notes:

- N/A

crates/workspace/src/workspace.rs

@@ -15,6 +15,7 @@ mod toast_layer;
 mod toolbar;
 mod workspace_settings;
 
+use client::CloudUserStore;
 pub use toast_layer::{ToastAction, ToastLayer, ToastView};
 
 use anyhow::{Context as _, Result, anyhow};
@@ -839,6 +840,7 @@ pub struct AppState {
     pub languages: Arc<LanguageRegistry>,
     pub client: Arc<Client>,
     pub user_store: Entity<UserStore>,
+    pub cloud_user_store: Entity<CloudUserStore>,
     pub workspace_store: Entity<WorkspaceStore>,
     pub fs: Arc<dyn fs::Fs>,
     pub build_window_options: fn(Option<Uuid>, &mut App) -> WindowOptions,
@@ -911,6 +913,7 @@ impl AppState {
         let client = Client::new(clock, http_client.clone(), cx);
         let session = cx.new(|cx| AppSession::new(Session::test(), cx));
         let user_store = cx.new(|cx| UserStore::new(client.clone(), cx));
+        let cloud_user_store = cx.new(|cx| CloudUserStore::new(client.cloud_client(), cx));
         let workspace_store = cx.new(|cx| WorkspaceStore::new(client.clone(), cx));
 
         theme::init(theme::LoadThemes::JustBase, cx);
@@ -922,6 +925,7 @@ impl AppState {
             fs,
             languages,
             user_store,
+            cloud_user_store,
             workspace_store,
             node_runtime: NodeRuntime::unavailable(),
             build_window_options: |_, _| Default::default(),
@@ -5689,6 +5693,7 @@ impl Workspace {
 
         let client = project.read(cx).client();
         let user_store = project.read(cx).user_store();
+        let cloud_user_store = cx.new(|cx| CloudUserStore::new(client.cloud_client(), cx));
 
         let workspace_store = cx.new(|cx| WorkspaceStore::new(client.clone(), cx));
         let session = cx.new(|cx| AppSession::new(Session::test(), cx));
@@ -5696,6 +5701,7 @@ impl Workspace {
         let app_state = Arc::new(AppState {
             languages: project.read(cx).languages().clone(),
             workspace_store,
+            cloud_user_store,
             client,
             user_store,
             fs: project.read(cx).fs().clone(),