mnt: improve traits

[SauravMaheshkar]

• Adds some global helper traits TreeLike and NodeBasedTree and helper functions
• VEBTree -> vEB (as it should be)

[Copilot]

Pull Request Overview

This pull request improves the tree data structure architecture by adding global helper traits TreeLike and NodeBasedTree to standardize tree operations across different implementations, and renames VEBTree to vEB following naming conventions.

• Introduces TreeLike and NodeBasedTree traits to provide a unified interface for tree operations
• Renames VEBTree to vEB for consistency with van Emde Boas tree naming conventions
• Refactors BST and vEB implementations to inherit functionality through trait implementations

Reviewed Changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated 8 comments.

File	Description
src/tree.rs	Major refactoring of BST and vEB implementations with trait integration, method reorganization, and extensive code cleanup
src/lib.rs	Addition of TreeLike and NodeBasedTree traits, trait implementations for Tree, and new helper methods
.github/README.md	Addition of CI build status badge

[x0prc]

LGTM!

[Copilot]

Pull Request Overview

This PR improves the tree traits architecture and makes naming more consistent with van Emde Boas (vEB) tree conventions. It introduces two new global helper traits TreeLike and NodeBasedTree to provide a common interface for tree operations, and renames VEBTree to vEB to follow standard mathematical notation.

Key Changes:

• Added global traits TreeLike and NodeBasedTree for consistent tree interfaces
• Renamed VEBTree to vEB for better mathematical convention alignment
• Enhanced BST with tree access methods and improved deletion logic
• Added comprehensive trait implementations for the core Tree type

Reviewed Changes

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

File	Description
src/tree.rs	Refactored BST to use new traits, renamed VEBTree to vEB, improved deletion algorithms, and added tree access methods
src/lib.rs	Added TreeLike and NodeBasedTree traits, implemented them for Tree type, enhanced Node with binary tree helper methods
.github/README.md	Added CI badge to show build status

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