Added new variations of output and control of the JSON field

[MrVACO]

Field PR #2038
Doc PR #1034

• Expanded the Json field demo page in the devkit.
• Added preview examples for table-based Json output.
• Added a nested table preview example with object and list Json fields.
• Added examples for create button configuration, including icon-only, text-only, limited, and hidden add button states.
• Added display option examples for vertical orientation, reorderable rows, custom row buttons, and custom empty messages.