Data augmentation for Wasm

We used wasm-mutate to augment the original dataset of MINOS. We partially recreated the dataset from MINOS, and in this record, it is composed by 134 benign WebAssembly programs and 36 malign programs. After gathering the binaries we pass each program to wasm-mutate generating up to 1k variants. For the programs and its variants, we generate their grayscale representation and that is what is saved in the datasets.