Add OneDNN-based MNIST neural network implementation for optimized performance#6

acharneski merged 3 commits intomasterSimiaCryptus/qqn-optimizer:masterfrom

copilot/fix-d3736f03-bf86-4ac3-9968-cfb797e43c6fSimiaCryptus/qqn-optimizer:copilot/fix-d3736f03-bf86-4ac3-9968-cfb797e43c6fCopy head branch name to clipboard