Add hint to enable IDE integration for users running in VS Code (#5610)

packages/cli/src/config/settings.ts

@@ -115,6 +115,9 @@ export interface Settings {
   /// IDE mode setting configured via slash command toggle.
   ideMode?: boolean;
 
+  // Setting to track if the user has seen the IDE integration nudge.
+  hasSeenIdeIntegrationNudge?: boolean;
+
   // Setting for disabling auto-update.
   disableAutoUpdate?: boolean;