Work at 3ds support and backend upgrades

- Track textures (not sure if this is done tbh)
- Add lithium formatters and move TextureID, TextureFormat and TextureFilter to lithium
- Only include gl-helper if any glDriver is included
- Add Li::Rect for UV stuff
- Add Li::Texture as Info holder (still thinking of making them to ptrs
- Add Check if textures are still loaded on exit

include/pd/lithium/atlas.hpp

@@ -0,0 +1,25 @@
+#pragma once
+
+#include <pd/core/core.hpp>
+#include <pd/lithium/texture.hpp>
+
+namespace PD {
+namespace Li {
+enum class AtlasState {
+  Invalid,
+  ReqCreate,
+  ReqUpdate,
+  ReqDestroy,
+};
+
+class Atlas {
+ public:
+  Atlas() {}
+  ~Atlas() {}
+
+ private:
+  AtlasState pState = AtlasState::Invalid;
+  TextureID pID;
+};
+}  // namespace Li
+}  // namespace PD