feat: Implement RowSelection API for efficient row filtering (Phase 1)

[suxiaogang223]

Summary

Implements Phase 1 of the RowSelection API as proposed in #58.
Related Issue: #58 (Phase 1 implementation)

What's Implemented

✅ Phase 1: Basic API (MVP) - COMPLETE

All items from Phase 1 checklist in #58:

• Define RowSelector and RowSelection types (src/row_selection.rs)
• Implement FromIterator and basic conversions
• Add with_row_selection() to ArrowReaderBuilder
• Pass selection through to stripe decoder
• Implement basic skip in decoders (decode and discard)

Example Usage

See the design in #58 for detailed API examples. Quick example:

use orc_rust::{ArrowReaderBuilder, RowSelection, RowSelector};

let selection = vec![
    RowSelector::skip(1000),
    RowSelector::select(500),
].into();

let reader = ArrowReaderBuilder::try_new(file)?
    .with_row_selection(selection)
    .build();

[suxiaogang223]

@WenyXu fixed🤓

[codecov-commenter]

Codecov Report

❌ Patch coverage is 92.93785% with 25 lines in your changes missing coverage. Please review.
⚠️ Please upload report for BASE (main@93484df). Learn more about missing BASE report.

Additional details and impacted files

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  Misses          ?      890           
  Partials        ?        0           

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[WenyXu]

@WenyXu fixed🤓

Thanks! Let's move forward!