* fused the gate and up proj in mlp
* fix code styles
* opt auto_grad
* rollback test_inference_engine.py
* modifications based on the review feedback.
* fix bugs in flash attn
* Change reshape to view
* fix test_rmsnorm_triton.py
* add layerrmsnorm triton kernel
* add layerrmsnorm kernel
* modify the atol and rtol in test file
* Remove the logics of mean computations, and update the name of ther kernel functions and files
* add benchmark of rms norm