[Feature] jsonConvert supports data structure parsing of nested struc…

[wypzj]

…tType types

What type of PR is this：

• [ ] BugFix
• [X] Feature
• [ ] Enhancement
• [ ] Refactor
• [ ] UT
• [ ] Doc
• [ ] Tool

Which issues of this PR fixes ：

To synchronize spark data, json convert supports data structure parsing of nested structType types

   private final static StructType PERSON_TYPE = new StructType(new StructField[]{
            new StructField("name", DataTypes.StringType, false, Metadata.empty()),
            new StructField("age", DataTypes.LongType, true, Metadata.empty())

    });
    private final static StructType STRUCT_TYPE1 = new StructType(new StructField[]{
            new StructField("id", DataTypes.LongType, false, Metadata.empty()),
            new StructField("person", PERSON_TYPE, true, Metadata.empty())    });

Problem Summary(Required) ：

Checklist:

• [ ] I have added test cases for my bug fix or my new feature
• [ ] This pr will affect users' behaviors
• [ ] This pr needs user documentation (for new or modified features or behaviors)
• [ ] I have added documentation for my new feature or new function