chore(client): json util supply method to parse json list

[diaohancai]

Purpose of the PR

• close #576

Main Changes

org.apache.hugegraph.util.JsonUtil supply method to parse json list.

Verifying these changes

• [ ] Trivial rework / code cleanup without any test coverage. (No Need)
• [ ] Already covered by existing tests, such as (please modify tests here).
• [X] Need tests and can be verified as follows:
  • org.apache.hugegraph.unit.JsonUtilTest

Does this PR potentially affect the following parts?

• [X] Nope
• [ ] Dependencies (add/update license info)
• [ ] Modify configurations
• [ ] The public API
• [ ] Other affects (typed here)

Documentation Status

• [ ] Doc - TODO
• [ ] Doc - Done
• [X] Doc - No Need

[imbajin]

license header (add we'll provide a doc to setup IDEA soon)

[codecov[bot]]

Codecov Report

Attention: 2 lines in your changes are missing coverage. Please review.

Comparison is base (b066b80) 62.49% compared to head (6cff118) 62.54%. Report is 19 commits behind head on master.

Files	Patch %	Lines
.../main/java/org/apache/hugegraph/util/JsonUtil.java	50.00%	2 Missing :warning:

Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #577 +/- ## ============================================ + Coverage 62.49% 62.54% +0.04% - Complexity 1903 1925 +22 ============================================ Files 262 267 +5 Lines 9541 9681 +140 Branches 886 888 +2 ============================================ + Hits 5963 6055 +92 - Misses 3190 3237 +47 - Partials 388 389 +1 ```

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