/claim https://github.com/zio/zio-blocks/issues/518

Summary

This PR implements the Into[A, B] and As[A, B] type classes for type-safe schema evolution, featuring automatic macro derivation for both Scala 2 and Scala 3.

Deliverables

• Into[A, B] trait and macro (Scala 2.13 & 3.x)
• As[A, B] trait and macro (Scala 2.13 & 3.x)
• Comprehensive test suite covering products, coproducts, and collections
• Runtime validation for numeric narrowing and opaque types

Verification

Tests passed on both versions.

Demo Video

https://github.com/user-attachments/assets/7b0ee121-fd1e-4c25-ab44-0ce057f0a4e0