refactor backend module architecture

app/api/endpoints/workflow.py

@@ -9,8 +9,8 @@ from sqlalchemy.orm import Session
 from app import schemas
 from app.api.response import ResponseAPIRouter
 from app.chain.workflow import WorkflowChain
-from app.core.config import global_vars
-from app.core.plugin import PluginManager
+from app.platform.config import global_vars
+from app.extensions.plugin_manager import PluginManager
 from app.workflow import WorkFlowManager
 from app.db import get_async_db, get_db
 from app.db.models import Workflow, User
@@ -20,7 +20,7 @@ from app.db.user_oper import (
     get_current_active_manage_user_async,
 )
 from app.db.workflow_oper import WorkflowOper
-from app.helper.server import MoviePilotServerHelper
+from app.integrations.server import MoviePilotServerHelper
 from app.scheduler import Scheduler
 from app.schemas.types import EventType, EVENT_TYPE_NAMES