Add a way to visualize memory snapshot traces (#90348)
This adds a d3-based interactive visualization for exploring the memory
allocation traces that the caching allocator can capture. This visualization
code can also be attached to kineto trace information in the future to also
provide visualization for the memory events captured there, which come with
addition information about the graph.
Pull Request resolved: https://github.com/pytorch/pytorch/pull/90348
Approved by: https://github.com/robieta
