[Feature] Reuse default settings / cache the previous input in hubble

[wanganjuan]

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Feature Description (功能描述)

when we first open hubble, we should give a default settings model for users to input/modify

subtask of #382

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• [X] Yes I am willing to submit a PR!

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[wanganjuan]

fix https://github.com/apache/incubator-hugegraph-toolchain/pull/447