PNG is now a resource.

You can now load textures threaded.
PNG will now throw exceptions when errors happend
SpriteComponent is now working without billboarding.

src/Engine/Rendering/Util/CommonFunctions.cpp

@@ -1,2 +1,19 @@
 #include "Rendering/Util/CommonFunctions.h"
 
+Texture* CommonFunctions::LoadTexture(std::string path, bool threaded)
+{
+    Texture* img;
+    try {
+        if(threaded) {
+            img = ResourceManager::Load<Texture, true>(path);
+        } else {
+            img = ResourceManager::Load<Texture, false>(path);
+        }
+    } catch (const Resource::StillLoadingException&) {
+        img = ResourceManager::Load<Texture>("Textures/Core/ErrorTexture.png");
+    } catch (const std::exception&) {
+        img = nullptr;
+    }
+
+    return img;
+}