Update omniparser.py

[mst-rajatmishra]

Hii, I tried making some changes,

• Used logging instead of print statements for better tracking and debugging.
• Added try-except blocks to handle potential errors during processing and exporting.
• Implemented a parse_batch method to handle multiple images.
• Added an export_results method for saving results in JSON format, with a placeholder for CSV export.
• Wrapped the example usage in an if __name__ == "__main__": block for better practice.

Thank You, RAJAT MISHRA