Smart expand/collapse controls

[parsapanahpoor]

• Issue Title: Implement smart expand/collapse controls for JSON tree
• Description:
  Improve the expand/collapse behavior with global controls (expand/collapse all) and a configurable default depth, so complex JSON structures remain manageable and fast to explore.
• Tasks:
  • Add "Expand all" and "Collapse all" actions (optional UI buttons).
  • Add a parameter for default expansion depth (e.g., DefaultExpandDepth).
  • Ensure expand/collapse operations are efficient for large JSON.
  • Preserve expand/collapse state when possible (e.g., when re-rendering with same data).
  • Update documentation with examples for configuration.