[Debug] Build APVTS visualizer tool

[tensquaresoftware]

Create a visual debugging tool to inspect and verify the AudioProcessorValueTreeState (APVTS) structure and values.

Tasks:

• Design visualizer UI (tree view or hierarchical display)
• Implement APVTS inspection and traversal
• Display parameter IDs, types, current values, and ranges
• Add search/filter functionality
• Complement existing ApvtsLogger with visual representation
• Test with full Matrix-1000 parameter set

Context:
This tool will help debug APVTS structure issues and verify parameter organization, complementing the existing text-based ApvtsLogger.