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This example show how to use HuggingFace's Stable Diffusion v2.1
(https://huggingface.co/stabilityai/stable-diffusion-2-1) model
with migraphx's python frontend.

Disable python tests on Python 3.6 temporarily till we remove numpy dependencies from the tests using them.
Different versions of Python are compatible with different versions of numpy, so we need to remove numpy dependency.

This sets up the virtual environments for running python onnx tests.
ctest's fixtures are used to ensure that the virtual environment is
set up before the tests are run.

Added an Accuracy checker to the tools directory.  Currently compares ONNX FP32 models against ORT CPUEP

Updated each source file in the repo with the existing license.

* restructring examples

* modifications to titles/paths

* cleanup
Co-authored-by: root <root@rocm-framework-3.amd.com>