Printing Compute Graph to Validate Dependencies of Operations

[mjkpolo]

I was wondering if there is a way to print the compute graph built by llama.cpp to validate the dependencies of certain operations. Specifically, it's not immediately clear to me when the ggml_cpy operations are performed since their result is passed to ggml_build_forward_expand and not another ggml_tensor so I would like to validate copies into a view of a tensor is done before that tensor is used.

Thanks!!

[Green-Sky]

see #882