Migrate to FMOD 2.03.09

[utgarda]

Problem

libfmod currently supports FMOD 2.02.22, preventing access to newer FMOD versions and causing compatibility issues with updated FMOD installations.

Breaking Changes in 2.03

• No ABI compatibility between 2.02 and 2.03 - complete recompilation required
• System::getVersion() adds build number parameter
• FMOD_ADVANCEDSETTINGS removes commandQueueSize field
• FMOD_OUTPUT_DESCRIPTION renames polling → method
• FMOD_STUDIO_ADVANCEDSETTINGS adds encryptionkey field

Migration Plan

1. Update libfmod-gen - Fix structure definitions and function signatures
2. Regenerate bindings - Run generator with FMOD 2.03.09 headers
3. Fix libfmod wrappers - Handle new getVersion signature, remove commandQueueSize usage
4. Update bevy_fmod - Remove deprecated field references
5. Test core features - System init, bank loading, event playback

Scope

• ✅ Core features only (system, banks, events)
• ⏸️ Defer: 3D audio, parameters, callbacks, DSP effects