feat: implement audio object definitions and refactor audio system

- Add AudioObjectDefinitions.cs with name-to-ID mappings and ambiguity detection
- Update AudioSystem.cs to support Play(uint) and deprecated Play(string) with warnings
- Rename PitchStepManager to PitchStepResolver and update all references
- Refactor generated code to use 'this.' prefix and foreach loops
- Remove TestEnum from audio enums and IDs
- Update SampleScene.unity to use new AudioSystem namespace and rain sound parameter
- Optimize binary serialization in generated audio classes

Assets/Scripts/OCES/Audio/HandWritten/AudioScheduler.cs

@@ -31,7 +31,7 @@ namespace OCES.Audio
         AudioMixerGroup m_voiceGroup;
         AudioSourcePool m_pool;
         AudioContainerSelector m_containerSelector;
-        PitchStepManager m_pitchStepManager;
+        PitchStepResolver m_pitchStepResolver;
 
 #if UNITY_EDITOR
         void Update()
@@ -70,7 +70,7 @@ namespace OCES.Audio
 
             this.m_pool = new AudioSourcePool(transform);
             this.m_containerSelector = new AudioContainerSelector();
-            this.m_pitchStepManager = new PitchStepManager();
+            this.m_pitchStepResolver = new PitchStepResolver();
 
             AudioMixerGroup[] sfx      = Find("Master/SFX");
             if (sfx.Length > 0) this.m_sfxGroup      = sfx[0];
@@ -166,7 +166,7 @@ namespace OCES.Audio
             }
 
             // 执行播放
-            float pitch = this.m_pitchStepManager.ResolvePitch(audioObject, now); //算一下用不用变调
+            float pitch = this.m_pitchStepResolver.ResolvePitch(audioObject, now); //算一下用不用变调
             PlayNewSound(audioObject, pitch);
             this.m_lastPlayTime[audioObject.Id] = now;
         }