[Feature] Add an iterative component

[jstbw]

MaxKB Version

1.10.4

Please describe your needs or suggestions for improvements

需要类似dify的迭代组件，现在只能通过调用应用的api来实现，一来比较麻烦，二来无法实现并行，只能串行

Please describe the solution you suggest

No response

Additional Information

No response

[baixin513]

感谢反馈，重复issue 同 #1424

[shaohuzhang1]

Bot detected the issue body's language is not English, translate it automatically. 👯👭🏻🧑‍🤝‍🧑👫🧑🏿‍🤝‍🧑🏻👩🏾‍🤝‍👨🏿👬🏿

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Thanks for the feedback, repeat issue with #1424