devtools: persist fsr configs (#2852)

Saves FSR config to imgui.ini so it won't reset every startup

src/imgui/imgui_texture.h

@@ -4,8 +4,11 @@
 #pragma once
 
 #include <filesystem>
+#include <vector>
 #include <imgui.h>
 
+#include "common/types.h"
+
 namespace ImGui {
 
 namespace Core::TextureManager {