Big refactor, shuffling a lot of files around

src/imgui/window/frame_properties.h

@@ -0,0 +1,13 @@
+#pragma once
+
+#include "manager.h"
+#include "settings.h"
+
+namespace anm2ed::imgui
+{
+  class FrameProperties
+  {
+  public:
+    void update(Manager&, Settings&);
+  };
+}