zeta: Onboarding and title bar banner (#23797)

Release Notes:

- N/A

---------

Co-authored-by: Danilo Leal <daniloleal09@gmail.com>
Co-authored-by: Danilo <danilo@zed.dev>
Co-authored-by: João Marcos <joao@zed.dev>

Cargo.toml

@@ -152,7 +152,7 @@ members = [
     "crates/worktree",
     "crates/zed",
     "crates/zed_actions",
-    "crates/zed_predict_tos",
+    "crates/zed_predict_onboarding",
     "crates/zeta",
 
     #
@@ -201,7 +201,6 @@ edition = "2021"
 
 activity_indicator = { path = "crates/activity_indicator" }
 ai = { path = "crates/ai" }
-zed_predict_tos = { path = "crates/zed_predict_tos" }
 anthropic = { path = "crates/anthropic" }
 assets = { path = "crates/assets" }
 assistant = { path = "crates/assistant" }
@@ -350,6 +349,7 @@ workspace = { path = "crates/workspace" }
 worktree = { path = "crates/worktree" }
 zed = { path = "crates/zed" }
 zed_actions = { path = "crates/zed_actions" }
+zed_predict_onboarding = { path = "crates/zed_predict_onboarding" }
 zeta = { path = "crates/zeta" }
 
 #