Prepare for SDL3 support

app/streaming/audio/renderers/sdl.h

@@ -1,7 +1,7 @@
 #pragma once
 
 #include "renderer.h"
-#include <SDL.h>
+#include "SDL_compat.h"
 
 class SdlAudioRenderer : public IAudioRenderer
 {

app/streaming/audio/renderers/sdlaud.cpp

@@ -1,7 +1,6 @@
 #include "sdl.h"
 
 #include <Limelight.h>
-#include <SDL.h>
 
 SdlAudioRenderer::SdlAudioRenderer()
     : m_AudioDevice(0),

app/streaming/audio/renderers/slaud.cpp

@@ -1,6 +1,6 @@
 #include "slaud.h"
 
-#include <SDL.h>
+#include "SDL_compat.h"
 
 SLAudioRenderer::SLAudioRenderer()
     : m_AudioContext(nullptr),

app/streaming/audio/renderers/soundioaudiorenderer.cpp

@@ -1,6 +1,6 @@
 #include "soundioaudiorenderer.h"
 
-#include <SDL.h>
+#include "SDL_compat.h"
 
 #include <QtGlobal>