* onnx attention
* setup an example, adding and fixing onnx ops bit by bit
* model working, output is garbage data
* trilu working
* close but not quite, Issues still with scatterND
* closer but the outputs are still slightly wrong
* added tests for trilu and scatterND
* lint
* readme
* clippy
* removed unnessisary comments
* changed device selection, took hyperparameters from model config
