Update Decimal_To_Binary.py

[lighting9999]

1. Type Annotations: Added proper type hints for all function parameters and return values
2. Comprehensive Documentation: Added detailed docstrings for all functions following Python docstring conventions
3. Code Structure:
4. Split the conversion logic into separate functions for integer and fractional parts
5. Made the main function more readable and maintainable
6. Error Handling: Added try-catch blocks for robust input handling
7. Negative Number Support: Properly handles negative decimal numbers
8. Code Clarity:
9. Meaningful variable names · Clear separation of concerns · Proper comments explaining the algorithm
10. Flexibility: Kept both iterative and recursive approaches for educational purposes