Manage sounds on the game and control the volume

[alemarin5]

👉 Checklist

Please make sure to check off the following before submitting:

• [✅ ] I have reviewed my submission thoroughly.
• [ ✅] I have tested my code (if submission is related to coding) and run the game before pushing (to make sure the project compile).
• [✅ ] I have run the JUnit tests (if submission is related to coding).
• [✅ ] I have read the Code of Conduct and Contribution Guidelines.

✍ Description of the Pull Request

Please concisely describe the changes you have made.

• Fixed the button on the home screen that put the sound of the game on or off.
• Added a slider that increase or decrease the intensity of the sound on the main menu.

🔗 Issue link

Issue reference number and link goes here e.g. 'Fixes/Closes #<issue_number>'.

• [ ✅] This Pull Request fixes the issue : 'Closes #[Feature]: Manage sounds on the game and control the volume [Feature]: Manage sounds on the game and control the volume #76'
• This Pull Request does not fix an issue.

Thanks for taking the time to fill out this Pull Request! ❤️ Thanks for contributing to this project 🦖

[github-actions]

👋 Hello @alemarin5, thank you for submitting in Dinosaur Exploder 🦖 PR! To allow your work to be integrated as seamlessly as possible, we advise you to:

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[jvondermarck]

Heyy, thanks for your PR !! :)

I tested what you did and it is very good.
I will create some issues to improve the design of the slidebar so that you or someone else could contribute to it.