feat: soundboard packets

Add the soundboard message protocol mirroring the Arcturus side:
- incoming SoundboardSettings (enabled flag + sound list) and
  SoundboardPlay (soundId, url, username) events + parsers
- outgoing SoundboardPlay (soundId) and SoundboardSetEnabled composers
- header ids 9405/9406 (incoming), 9306/9307 (outgoing)
- NitroMessages registration + barrel exports

packages/communication/src/messages/outgoing/OutgoingHeader.ts

@@ -556,4 +556,6 @@ export class OutgoingHeader
     public static WHEEL_BUY_SPIN = 9303;
     public static WHEEL_ADMIN_GET_PRIZES = 9304;
     public static WHEEL_ADMIN_SAVE_PRIZES = 9305;
+    public static SOUNDBOARD_PLAY = 9306;
+    public static SOUNDBOARD_SET_ENABLED = 9307;
 }

packages/communication/src/messages/outgoing/index.ts

@@ -23,6 +23,7 @@ export * from './handshake';
 export * from './help';
 export * from './housekeeping';
 export * from './rarevalues';
+export * from './soundboard';
 export * from './wheel';
 export * from './inventory';
 export * from './inventory/avatareffect';

packages/communication/src/messages/outgoing/soundboard/SoundboardPlayComposer.ts

@@ -0,0 +1,14 @@
+import { IMessageComposer } from '@nitrots/api';
+
+export class SoundboardPlayComposer implements IMessageComposer<[ number ]>
+{
+    private _data: [ number ];
+
+    constructor(soundId: number)
+    {
+        this._data = [ soundId ];
+    }
+
+    public getMessageArray(): [ number ] { return this._data; }
+    public dispose(): void { return; }
+}

packages/communication/src/messages/outgoing/soundboard/SoundboardSetEnabledComposer.ts

@@ -0,0 +1,14 @@
+import { IMessageComposer } from '@nitrots/api';
+
+export class SoundboardSetEnabledComposer implements IMessageComposer<[ number ]>
+{
+    private _data: [ number ];
+
+    constructor(enabled: boolean)
+    {
+        this._data = [ enabled ? 1 : 0 ];
+    }
+
+    public getMessageArray(): [ number ] { return this._data; }
+    public dispose(): void { return; }
+}

packages/communication/src/messages/outgoing/soundboard/index.ts

@@ -0,0 +1,2 @@
+export * from './SoundboardPlayComposer';
+export * from './SoundboardSetEnabledComposer';