Replace promised-lifestream dependency with stream/promises

[tilfin]

Description

This issue proposes removing the promised-lifestream dependency and replacing it with Node.js built-in stream/promises module.

Motivation

• Reduce external dependencies: Node.js now provides native promise-based stream utilities in the stream/promises module
• Better maintenance: Using built-in modules reduces the risk of security vulnerabilities and maintenance overhead
• Performance: Native implementations are typically more optimized
• Compatibility: Ensures better long-term compatibility with Node.js updates

Proposed Changes

1. Remove promised-lifestream from package.json dependencies
2. Replace imports/requires of promised-lifestream with stream/promises
3. Update any code that uses promised-lifestream APIs to use the equivalent stream/promises APIs
4. Update tests to verify functionality remains intact
5. Update documentation if needed

Implementation Notes

The stream/promises module provides utilities like:

• pipeline() - for connecting streams with promise support
• finished() - for waiting for a stream to complete
• Transform, Readable, Writable with promise support

Acceptance Criteria

• promised-lifestream dependency removed from package.json
• All functionality using promised-lifestream migrated to stream/promises
• All existing tests pass
• No breaking changes to public API
• Documentation updated if necessary