WASM Snake Engine

## Description

Create a Rust WASM package that controls the game of Snake.

The engine should power:
- The snake movements forward.
- The random spawning of the food.

### Requirements

- The Rust package is deployed to Crates.io
- The JS package is deployed to NPM
- The Crate provides a function that initializes the HTML canvas.
- The Crate provides a function to start the game.
- The Crate provides a function to end the game.