feat: Implement Unity Audio module adapter

[Bli-AIk]

🔗 Is your feature request related to a specific issue?

Lunar.Core.Base provides an AudioManagerBase interface for decoupled audio logic, but it lacks a concrete implementation for Unity. As a result, any game logic written against the core interface cannot produce sound in a Unity-based project.

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💡 Feature Description

• Expected outcome or effect: A concrete Unity-side implementation of AudioManagerBase that bridges the framework’s abstract audio interface with Unity’s built-in audio system.

• Specific implementation ideas, such as classes, methods, parameters, or API design:

  • Provide a Unity adapter that implements AudioManagerBase.
  • Internally, it should delegate playback and mixing to Unity APIs (AudioSource, AudioClip, AudioMixer).
  • Core methods (e.g., play sound effect, play music, adjust volume) should align with the existing abstract interface.

• Usage scenarios or benefits: Enables games built on Lunar to play sounds and music in Unity using its robust audio pipeline, including features like 3D audio, Doppler effects, and AudioMixer integration.

• Engine-specific context: Works in both Editor and Play mode. Targets all Unity platforms. Compatible with Mono and IL2CPP.

• Engine name & version: Unity 2021.3 LTS or later.

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⚖ Alternatives Considered

N/A

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📝 Additional Information

• Example usage flow:
  Game Logic → AudioManagerBase.PlaySound("Explosion") → Unity implementation delegates to AudioSource for playback.

See Lunar.Core.Base#2