feat: Add active job management for user and show progress in conversation list

- Implemented a new endpoint to retrieve active generation job IDs for the current user, enhancing user experience by allowing visibility of ongoing tasks.
- Integrated active job tracking in the Conversations component, displaying generation indicators based on active jobs.
- Optimized job management in the GenerationJobManager and InMemoryJobStore to support user-specific job queries, ensuring efficient resource handling and cleanup.
- Updated relevant components and hooks to utilize the new active jobs feature, improving overall application responsiveness and user feedback.

packages/data-provider/src/keys.ts

@@ -60,6 +60,8 @@ export enum QueryKeys {
   /* MCP Servers */
   mcpServers = 'mcpServers',
   mcpServer = 'mcpServer',
+  /* Active Jobs */
+  activeJobs = 'activeJobs',
 }
 
 // Dynamic query keys that require parameters