staging some future refactoring, .h -> hpp, fix for rendering w/ audio

src/resources.hpp

@@ -0,0 +1,28 @@
+#pragma once
+
+#include <imgui/imgui.h>
+
+#include "audio.h"
+#include "font.h"
+#include "icon.h"
+#include "shader.h"
+#include "texture.h"
+
+namespace anm2ed
+{
+  class Resources
+  {
+  public:
+    resource::Font fonts[resource::font::COUNT]{};
+    resource::Texture icons[resource::icon::COUNT]{};
+    resource::Shader shaders[resource::shader::COUNT]{};
+    resource::Audio music{};
+
+    Resources();
+    resource::Audio& music_track();
+    resource::Audio* music_track_if_loaded();
+
+  private:
+    bool isMusicLoaded{false};
+  };
+}