Refactor job model and endpoints for improved structure

Updated the job model to include `sample_id` and `run_id` fields, replacing `experiment_parameters_id`. Adjusted relationships and modified routers to reflect these changes. Added an endpoint for updating job status and restructured job streaming logic to include detailed experiment and sample data.

backend/app/routers/sample.py

@@ -351,8 +351,9 @@ def create_experiment_parameters_for_sample(
     db.commit()
 
     new_job = JobModel(
-        experiment_parameters_id=new_exp.id,  # <-- Correct reference here
-        parameters=new_exp,  # assuming params has a to_dict() method
+        sample_id=sample_id,
+        run_id=new_exp.id,
+        experiment_parameters=new_exp,  # not sure yet
         status=JobStatus.TODO,
     )
     db.add(new_job)