Refactor job model and optimize job streaming.

Updated the `JobModel` with foreign key relationships and string-based status to enhance database consistency, and improved job event streaming by using `jsonable_encoder` for better serialization. Also, streamlined dependencies by adding `urllib3` to handle HTTP requests.

backend/app/schemas.py

@@ -941,3 +941,19 @@ class ResultResponse(BaseModel):
 
     class Config:
         from_attributes = True
+
+
+class JobsCreate(BaseModel):
+    id: str
+    name: str
+    status: str
+    type: str
+    start_time: datetime
+    end_time: datetime
+    description: Optional[str]
+    parameters: str
+    datacollectionparameters: DataCollectionParameters
+    beamlineparameters: BeamlineParameters
+
+    class Config:
+        from_attributes = True