Preserve music album genre in json files

[Zuhaib042]

Preserve music album and genre classes' data in JSON files

Summary

• In this milestone, I have created methods that convert classes' data into JSON form
• When the user closes the app, the data get preserved in JSON files.
• When the user restarts the app, the data loads up from .json files.

[kene-creator]

Hi @Zuhaib042 ,

Your task is complete! There is nothing else to say other than... it's time to merge it :shipit: Congratulations! 🎉

Highlights 💯

• All tests are passing ✔️
• Descriptive pull request ✔️
• Flowed git flow ✔️
• Meaningful commit messages ✔️

Optional suggestions

Cheers and Happy coding!👏👏👏

Feel free to leave any questions or comments in the PR thread if something is not 100% clear. Please, remember to tag me in your question so I can receive the notification.

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