Adding tensor dumpings for mtmd models, specifically .mmproj files

[ryan-mangeno]

I asked a question about how I could view the tensors for a vision model but it doesn't seem like there exists any support for it, I believe it could be useful to use llama-eval-callback and passing a --mmproj flag to print these tensors. Refer to this other discussion ... #14567

[ryan-mangeno]

I also would like to work on this if this is a good idea