Feature/refactor-with-hooks

[eduardosancho]

What was done in this PR: ✌️

Refactor the Calculator.js component, from a class-based component to a functional component with hooks

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• Replace the constructor(props) for an object with the same declared variables (total, next, operation). 👷
• Import {useState} hook to dynamically update the variables mentioned in the last bullet point. ⬆️⬆️⬆️
• Refactor handleClick function to adapt to the current functional component format. 🕐

[Cathella]

🔥 Status: Approved 🟢

Hi @eduardosancho 👋🏻,

Great good job refactoring from a class-based component to a functional component using hooks 💪🏻!
Your project is complete! There is nothing else to say other than... it's time to merge it
Congratulations! 🎉

To Highlight 💪🏻

✅ No linter errors.
✅ You used correct Github Flow.
✅ Professional README.

Cheers and Happy coding!👏👏👏

Feel free to leave any questions or comments in the PR thread if something is not 100% clear.

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