Implement shell tools (cat, ls, wc) in JavaScript with NodeJS

### Link to the coursework

https://github.com/CodeYourFuture/Module-Tools/tree/main/implement-shell-tools

You should implement these tools in JavaScript.

### Why are we doing this?

Practicing designing and writing code, getting used to writing small tools, and understanding argument parsing.

### Maximum time in hours

9

### How to submit

Submit a PR from your fork of the Module-Tools repo with your implementations.

Start with the implement-shell-tools coursework in the linked Module-Tools repository and review its instructions and existing structure. Implement the cat, ls, and wc tools in JavaScript with NodeJS, then submit a pull request from your fork as described; completion means all three tools are implemented.

Escrita pelo modelo de indexação a partir do texto da issue.