VideoCore: Run include-what-you-use and fix most includes.

src/video_core/vertex_loader.h

@@ -1,14 +1,19 @@
 #pragma once
 
-#include <iterator>
-#include <algorithm>
+#include "common/common_types.h"
 
 #include "video_core/pica.h"
-#include "video_core/shader/shader.h"
-#include "video_core/debug_utils/debug_utils.h"
 
 namespace Pica {
 
+namespace DebugUtils {
+class MemoryAccessTracker;
+}
+
+namespace Shader {
+class InputVertex;
+}
+
 class VertexLoader {
 public:
     void Setup(const Pica::Regs& regs);