feat: item models generation simple & remove core:item_models

src/graphics/core/Model.cpp

@@ -29,6 +29,11 @@ void Mesh::addBox(glm::vec3 pos, glm::vec3 size) {
     addPlane(pos-X*size, Z*size, Y*size, -X);
 }
 
+void Mesh::scale(const glm::vec3& size) {
+    for (auto& vertex : vertices) {
+        vertex.coord *= size;
+    }
+}
 
 void Model::clean() {
     meshes.erase(