feat: introduce SSE endpoint for workflow registration job events

[kikkomep]

This pull request improves tracking and monitoring of workflow registration jobs, including status updates, event streaming, and cache timeout adjustments.

Job status tracking improvements:

• Updated the workflow registration process to set the job status to 'workflow registered' after successful registration in register_workflow (lifemonitor/api/services.py).
• Updated the workflow processing logic to set the job status to 'completed' once the workflow is created in process_workflows_post (lifemonitor/api/controllers.py).

Job monitoring and API enhancements:

• Added a new /jobs/<job_id>/events endpoint to provide real-time Server-Sent Events (SSE) streaming of job status updates, allowing clients to monitor job progress live (lifemonitor/tasks/controller.py).

Configuration.

• Increased the job cache timeout from 1 minute to 10 minutes to ensure job data persists longer for monitoring purposes (lifemonitor/tasks/utils.py).