Consolidate ttnn to/from data movement ops

[kevinwuTT]

• Fuse patterns of to_device, to_layout, and from_torch to just from_torch
• Fuse patterns of from_device, to_layout, and to_torch to just to_torch
• Remove checking of data movement ops in unit tests
• Instead of checking the nodes' exact positions in the graph, change to checking for their existences and relative positions to other nodes
• Update README to reflect changes
• Update mnist and resnet model tests to catch failures
• Add a warning when a model fails when collecting runtime metrics
• Fix metrics collection when original outputs are of Tensor type but compiled outputs are missing.