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.

app/src/stores/audioChannelStore.ts

@@ -0,0 +1,44 @@
+import { create } from 'zustand';
+import { persist } from 'zustand/middleware';
+
+export interface AudioChannel {
+  id: string;
+  name: string;
+  is_default: boolean;
+  device_ids: string[];
+  created_at: string;
+}
+
+interface AudioChannelStore {
+  channels: AudioChannel[];
+  setChannels: (channels: AudioChannel[]) => void;
+  addChannel: (channel: AudioChannel) => void;
+  updateChannel: (id: string, channel: Partial<AudioChannel>) => void;
+  removeChannel: (id: string) => void;
+}
+
+export const useAudioChannelStore = create<AudioChannelStore>()(
+  persist(
+    (set) => ({
+      channels: [],
+      setChannels: (channels) => set({ channels }),
+      addChannel: (channel) =>
+        set((state) => ({
+          channels: [...state.channels, channel],
+        })),
+      updateChannel: (id, updates) =>
+        set((state) => ({
+          channels: state.channels.map((ch) =>
+            ch.id === id ? { ...ch, ...updates } : ch,
+          ),
+        })),
+      removeChannel: (id) =>
+        set((state) => ({
+          channels: state.channels.filter((ch) => ch.id !== id),
+        })),
+    }),
+    {
+      name: 'voicebox-audio-channels',
+    },
+  ),
+);