feat: workflow和chat分离

1，增加了创建workflow的页面
2.删除了event

kilostar/api/__init__.py

@@ -98,7 +98,7 @@ async def workflow_error_handler(request: Request, exc: WorkflowError):
 
 
 base_dir = os.path.dirname(
-    os.path.dirname(os.path.dirname(os.path.dirname(os.path.abspath(__file__))))
+    os.path.dirname(os.path.dirname(os.path.abspath(__file__)))
 )
 frontend_dir = os.path.join(base_dir, "frontend", "dist")