feat: item models generation simple & remove core:item_models

src/graphics/core/Model.hpp

@@ -17,6 +17,7 @@ namespace model {
     
         void addPlane(glm::vec3 pos, glm::vec3 right, glm::vec3 up, glm::vec3 norm);
         void addBox(glm::vec3 pos, glm::vec3 size);
+        void scale(const glm::vec3& size);
     };
 
     struct Model {