Feature/stream excel

[rjsamra]

Add Streaming Support for Large Excel Files

Description

This PR adds streaming support for processing large Excel files efficiently, preventing memory exhaustion when handling massive datasets.

Features Added

• New stream() method in ExcelTo class for processing large files
• Chunk-based processing with configurable chunk size
• Memory-efficient handling of large datasets
• Consistent output format with existing methods
• Comprehensive test coverage

Technical Details

• Implemented ProcessExcelChunk job for handling data in chunks
• Added streaming support to ExcelTo class
• Maintained backward compatibility with existing methods
• Added feature tests for streaming functionality
• Updated documentation with streaming feature details

Testing

• Added comprehensive feature tests
• Tested with various file sizes and chunk configurations
• Verified memory usage with large files
• Tested single and multiple sheet scenarios

Documentation

• Updated README with streaming feature details
• Added usage examples
• Documented response formats
• Added memory efficiency notes

Breaking Changes

None. This is a backward-compatible feature addition.

Checklist

• Code follows the project's coding standards
• Tests have been added/updated
• Documentation has been updated
• All tests pass
• No breaking changes introduced