Arm backend: Support channels-last input and output

[AdrianLundell]

• Insert transposes for input/output iff the incoming/outgoing data is
  in channels first format.
• For testing using tosa_reference_mode, transpose numpy arrays to and
  from correct data format since numpy doesn't have the concept of
  dim_order.
• Remove checks for channels_first only input.
• Remove check for not changing dim_order before to_tosa_memory_format
  pass since the behaviour of channel last tensors is non-predictable.
• Add dim order testing of example networks and mv2
• Add a section to the documentation about memory formats.

cc @digantdesai @freddan80 @per @zingo @oscarandersson8218

[pytorch-bot]

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❌ 2 New Failures, 3 Cancelled Jobs, 1 Unrelated Failure

As of commit bccaa2a with merge base 897b0d5 ():

NEW FAILURES - The following jobs have failed:

• pull / unittest-editable / macos / macos-job (gh)
  backends/xnnpack/test/ops/test_prelu.py::TestPrelu::test_fp32_prelu
• trunk / unittest-release / macos / macos-job (gh)
  exir/tests/test_memory_format_ops_pass.py::TestMemoryFormatOpsPass::test_resnet18_xnnpack

CANCELLED JOBS - The following jobs were cancelled. Please retry:

• pull / test-openvino-linux / linux-job (gh)
  ##[error]The operation was canceled.
• trunk / test-arm-backend (test_pytest_ops_ethosu_fvp) / linux-job (gh)
  RuntimeError: Failed to generate selected_operators.yaml. Repro command:
• trunk / test-models-macos-cpu (ic4, xnnpack-quantization-delegation) / macos-job (gh)
  ##[error]The operation was canceled.

BROKEN TRUNK - The following job failed but were present on the merge base:

👉 Rebase onto the `viable/strict` branch to avoid these failures

• pull / unittest / macos / macos-job (gh) (trunk failure)
  ##[error]The operation was canceled.

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[zingo]

As #14191 has been merged I rebased this PR to "clean" out #14191 from the PR