S1ro1/run cuda

[S1ro1]

This PR enables running CUDA kernels same way as python scripts are currently supported by submitting a file named train.cu.

[S1ro1]

cc: @alexzhang13 @msaroufim let's move the discussion around this here.

TODO:

• [ ] support any .cu file
• [ ] cleanup the workflow to conform to the newer structure we have
• [ ] run ncu when enabled