chore: Add error handling for item processing

This commit adds error handling for item processing in the `job` function of `app.py`. When an error occurs while processing an item, the error is stored in the `errors` dictionary. This ensures that errors are captured and can be handled appropriately. The `queue-status` endpoint now includes the `errors` dictionary in the response, providing visibility into any processing errors that occurred.

Llama/app.py

@@ -100,6 +100,7 @@ async def create_item(prompt: Prompt):
             "status": "queued"
         }
     except Exception as e:
+        print(e)
         return {"error": repr(e)}
 
 @app.get("/queue-status/")
@@ -107,6 +108,7 @@ async def queue_status():
     try: 
         return {"pending": items_pending, "processed": items_processed, "queue": app.model_queue.qsize(), "errors": errors}
     except Exception as e:
+        print(e)
         return {"error": repr(e)}
 
 @app.post("/prompt-result/")
@@ -145,6 +147,7 @@ async def prompt_status(prompt_status: PromptResult):
                 "status": status
             }
     except Exception as e:
+        print(e)
         return {"error": repr(e)}