Implement audio channel management features

- Added new components for managing audio channels, including creation, updating, and deletion of channels.
- Introduced a new AudioTab for channel management and integrated it into the main application layout.
- Updated the API client to support audio channel operations and added corresponding backend endpoints.
- Enhanced the player store to handle audio playback routing through assigned channels.
- Refactored existing components to accommodate the new audio channel functionality, including updates to the HistoryTable and GenerationForm for profile-channel associations.
- Improved sidebar navigation to include new tabs for Voices and Audio management.

backend/models.py

@@ -159,3 +159,37 @@ class ActiveTasksResponse(BaseModel):
     """Response model for active tasks."""
     downloads: List[ActiveDownloadTask]
     generations: List[ActiveGenerationTask]
+
+
+class AudioChannelCreate(BaseModel):
+    """Request model for creating an audio channel."""
+    name: str = Field(..., min_length=1, max_length=100)
+    device_ids: List[str] = Field(default_factory=list)
+
+
+class AudioChannelUpdate(BaseModel):
+    """Request model for updating an audio channel."""
+    name: Optional[str] = Field(None, min_length=1, max_length=100)
+    device_ids: Optional[List[str]] = None
+
+
+class AudioChannelResponse(BaseModel):
+    """Response model for audio channel."""
+    id: str
+    name: str
+    is_default: bool
+    device_ids: List[str]
+    created_at: datetime
+
+    class Config:
+        from_attributes = True
+
+
+class ChannelVoiceAssignment(BaseModel):
+    """Request model for assigning voices to a channel."""
+    profile_ids: List[str]
+
+
+class ProfileChannelAssignment(BaseModel):
+    """Request model for assigning channels to a profile."""
+    channel_ids: List[str]