feat(settings): configure buses volumes from settings scene

[olivierperez]

🚀 Feature Request

Each player have different way to configure music and sounds.

📝 Describe the solution

• Add a Settings scene accessible from main menu
• Add tabs in this scene, one of them is "Audio"
• For each audio bus, add a field to set its volume
• When players press "Save", save buses volumes

🤔 Describe alternatives you've considered

• None

💡 Additional context

• You may want to implement a SettingsService like the ProgressionService example