Fixed the music button on the main menu not working

[Thompson6626]

👉 Checklist

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• [✅] 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).
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✍ Description of the Pull Request

Please concisely describe the changes you have made.
I've fixed the following issues:

• Fixed an issue where the music button did not turn music back on after being turned off.
• Fixed a bug where the background music from the game wouldn't stop when returning to the main menu.
• Added a playing music image to differentiate between muted and unmuted states.

🔗 Issue link

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

• [✅] This Pull Request fixes the issue : 'Closes [Bug]: impossible to turn the music back on #106'
• 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 @Thompson6626, 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]

Sorry for the long review !! I will just change the icon for the sound, it wasn't the best solution to make a random drawing with the wrong green color aha, but otherwise it is all good, thanks a lot for your contribution.