Refactor and remove performance reports; enhance JSON pooling logic

- Deleted comprehensive, executive, final performance analysis, performance charts, and summary reports to streamline documentation.
- Updated `Response` class to utilize centralized pooling logic from `JsonBufferPool` for consistency in JSON data handling.
- Added a public method in `JsonBufferPool` to check if data should use pooling, ensuring consistent behavior across components.
- Modified tests to ensure proper pooling thresholds and consistency between direct and response pooling.
- Enhanced test cases to validate JSON encoding with pooling, ensuring efficient memory usage and buffer reuse.

Author: code-cfernandes