feat: add resize, from_elem and wordvec! macro

[SOF3]

No description provided.

[Copilot]

Pull Request Overview

Adds WordVec::resize, WordVec::from_elem, and a new wordvec! macro; refactors trait impls and IntoIterator into dedicated modules; and reorganizes serde-related tests.

• Introduces WordVec::from_elem and WordVec::resize with tests for resize behavior.
• Extracts trait impls to src/trivial_traits.rs and IntoIterator to src/into_iter.rs.
• Adds wordvec! macro; moves serde tests out of tests.rs into src/serde_tests.rs under cfg(all(test, feature = "serde")).

Reviewed Changes

Copilot reviewed 6 out of 6 changed files in this pull request and generated 3 comments.

Show a summary per file

File	Description
src/lib.rs	Adds from_elem and resize; refactors Large::extend_iter; small constructor helpers; module reorg.
src/macros.rs	Introduces wordvec! macro.
src/trivial_traits.rs	Centralizes trivial trait impls for WordVec.
src/into_iter.rs	Moves IntoIterator implementation for WordVec into its own module.
src/tests.rs	Adds resize tests; removes inlined serde tests.
src/serde_tests.rs	Rehomes serde tests under cfg(all(test, feature = "serde")).

---

_{Tip: Customize your code reviews with copilot-instructions.md. Create the file or learn how to get started.}

[Copilot]

Pull Request Overview

Copilot reviewed 6 out of 6 changed files in this pull request and generated 4 comments.

---

_{Tip: Customize your code reviews with copilot-instructions.md. Create the file or learn how to get started.}

[Copilot]

Pull Request Overview

Copilot reviewed 6 out of 6 changed files in this pull request and generated 1 comment.

---

_{Tip: Customize your code reviews with copilot-instructions.md. Create the file or learn how to get started.}

[Copilot]

Pull Request Overview

Copilot reviewed 6 out of 6 changed files in this pull request and generated 2 comments.

---

_{Tip: Customize your code reviews with copilot-instructions.md. Create the file or learn how to get started.}