Unified interface for attributes

To be merged at the same time as aidge_core!16 (merged).

Changes here are very minor (just some renamings).

include/aidge/backend/cpu/operator/AvgPoolingImpl_forward_kernels.hpp

@@ -47,7 +47,7 @@ void AvgPoolingImpl2D_cpu_forward_kernel(const AvgPooling_Op<2>::Attrs &attrs,
                                 static_cast<float>(std::get<0>(attrs)[0])));
     // output W size
     const std::size_t oySize =
-            static_cast<std::size_t>(std::floor(static_cast<float>(dims[3] + std::get<2>(attrs)[1] + std::get<2>(attrs)[3] - std::get<1>(attrs)[1] + std::get<0>(attrs)/
+            static_cast<std::size_t>(std::floor(static_cast<float>(dims[3] + std::get<2>(attrs)[1] + std::get<2>(attrs)[3] - std::get<1>(attrs)[1] + std::get<0>(attrs)[1])/
                                 static_cast<float>(std::get<0>(attrs)[1])));
 
     // TODO: kernel computation