Convolutional Neural Operators for robust and accurate learning of PDEs - datasets

We made the datasets as clean as we could. It is now clear which data sets correspong to in-distribution and out-of-distributions testings. Please refer to out github page to get the script that loads the datasets: https://github.com/bogdanraonic3/ConvolutionalNeuralOperator/tree/main We also added additional datasets corresponding to Darcy flow (it was not there in the previous version).