[Enhancement] Support to read json column

[banmoy]

What type of PR is this：

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

Which issues of this PR fixes ：

StarRocks supports conversion from JSON type to Arrow String type in 25044 , so connector can support read StarRocks json column to Spark string now

Problem Summary(Required) ：

Checklist:

• [X] 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