convolutional neural network from scratch in js moment xp

• mnist cnn 97.83% acc for kittyalious XD
• bun.js + runWorker.js = 20% faster for kitty XDXD. 10% faster on nodejs & web.
• cifar10 incomplete 46% acc only :skul:
• mnist nn 93% acc

• mnist cnn: https://chuwon.github.io/cnn
• cifar10: https://chuwon.github.io/cnn?config=cifar10
• mnist nn: https://chuwon.github.io/cnn?config=mnistNN