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/texture.hpp

@@ -0,0 +1,46 @@
+#pragma once
+
+#include <pd/core/core.hpp>
+#include <pd/lithium/rect.hpp>
+
+namespace PD {
+using TextureID = ptr;
+enum class TextureFilter {
+  Linear,
+  Nearest,
+};
+
+enum class TextureFormat {
+  RGBA32,
+  RGB24,
+  A8,
+};
+namespace Li {
+class Texture {
+ public:
+  Texture() : pID(0), pSize(0, 0), pUV(fvec4(0, 0, 1, 1)) {}
+  Texture(TextureID id, ivec2 size)
+      : pID(id), pSize(size), pUV(fvec4(0, 0, 1, 1)) {}
+
+  const ivec2& GetSize() const { return pSize; }
+  TextureID GetID() { return pID; }
+  const TextureID& GetID() const { return pID; }
+  const Rect& GetUV() const { return pUV; }
+
+  void SetSize(int x, int y) {
+    pSize.x = x;
+    pSize.y = y;
+  }
+  void SetSize(const ivec2& size) { pSize = size; }
+  void SetID(TextureID id) { pID = id; }
+  void SetUV(const Rect& uv) { pUV = uv; }
+  void SetUV(const fvec4& uv) { pUV = uv; }
+  void SetUV(float t, float l, float b, float r) { SetUV(fvec4(t, l, b, r)); }
+
+ private:
+  TextureID pID;
+  ivec2 pSize;
+  Rect pUV;
+};
+}  // namespace Li
+}  // namespace PD