加个useMqtt封装？

[fssgh]

Description

加个useMqtt封装 Mqtt 可参考：mqtt-vue-hook

Suggested solution

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Alternative

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Additional context

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Validations

• Follow our Code of Conduct
• Read the Contributing Guidelines.
• Read the docs.
• Check that there isn't already an issue that request the same feature to avoid creating a duplicate.

[XiaoDaiGua-Ray]

不算高频函数封装，通用性不大。所以这边暂不考虑该 hook 封装哈。