Promisifying Callback-based Asynchronous Functions

# Introduction

In this project, you will learn how to promisify a callback-based asynchronous function in JavaScript. Specifically, you will convert the callback-based `readFile` function from the `fs` module in Node.js into a Promise-based version.

## 🎯 Tasks

In this project, you will learn:

- How to identify the conditions for promisifying a function
- How to implement a `promisefy` function to wrap a callback-based function and return a Promise
- How to use the Promise-based version of the `readFile` function to read a file asynchronously

## 🏆 Achievements

After completing this project, you will be able to:

- Understand the benefits of using Promises over callback-based asynchronous programming
- Implement a generic `promisefy` function to convert callback-based functions into Promise-based ones
- Utilize Promise-based asynchronous functions in your own projects to improve code readability and error handling