add missing usings

Author: Redninja106

src/SimulationFramework.Desktop/Audio/DesktopAudioProvider.cs

@@ -1,6 +1,7 @@
 using SimulationFramework.Components;
 using SimulationFramework.Messaging;
 using Silk.NET.OpenAL;
+using System;
 
 namespace SimulationFramework.Desktop.Audio;
 internal unsafe class DesktopAudioProvider : IAudioProvider

src/SimulationFramework.Desktop/Audio/DesktopSound.cs

@@ -1,6 +1,7 @@
 using NAudio.Vorbis;
 using NAudio.Wave;
 using Silk.NET.OpenAL;
+using System;
 using System.IO;
 
 namespace SimulationFramework.Desktop.Audio;