Replace zed_llm_client with cloud_llm_client (#35309)

This PR replaces the usage of the `zed_llm_client` with the
`cloud_llm_client`.

It was ported into this repo in #35307.

Release Notes:

- N/A

crates/inline_completion_button/src/inline_completion_button.rs

@@ -1,5 +1,6 @@
 use anyhow::Result;
 use client::{DisableAiSettings, UserStore, zed_urls};
+use cloud_llm_client::UsageLimit;
 use copilot::{Copilot, Status};
 use editor::{
     Editor, SelectionEffects,
@@ -34,7 +35,6 @@ use workspace::{
     notifications::NotificationId,
 };
 use zed_actions::OpenBrowser;
-use zed_llm_client::UsageLimit;
 use zeta::RateCompletions;
 
 actions!(