Updated PyWhatsapp.py for better error handling

[Bhavya100]

This pull request introduces comprehensive error handling and logging improvements to the PyWhatsapp script to enhance its robustness and maintainability.

Changes:

• Added the logging module to replace print statements for better error and status reporting.
• Configured logging to output timestamps, log levels, and messages.
• Replaced print statements with appropriate logging methods (info, warning, error).
• Enhanced error handling in functions to catch and log specific exceptions (e.g., NoSuchElementException) and general exceptions.
• Improved the resilience of the script by logging retries and unexpected errors during element searches and interactions.

These changes aim to provide clearer insights into the script's operations and facilitate easier debugging and maintenance.