This commit introduces a PHP library providing functional-style "safe types" like Option and Either for error-handling and validation. Key features include utility methods for safely unwrapping contained values and constructing types based on value states like Some, None, Left, or Right.

Changes:
- Added `Unwrap` interface for safely extracting values.
- Added `Option` interface and `Some` and `None` implementations.
- Added `Either` feature with `Left`, `Right`, and shared `LeftOrRight` class.
- Added `Validated` class for value validation using custom validators.
- Updated `README.md` with type documentation and examples.
- Introduced `composer.json` and `composer.lock` for dependency management.
- Added `.gitignore` to exclude vendor directories from source control.