Publish pose-detection as a standalone repo and pypi package

[ivelin]

Is your feature request related to a problem? Please describe.
Looking at Pypi and searching on google, I could not find a python version of the TFJS pose-detection API.

There are several pose estimation models (tf-pose) on github and pypi that are not optimized for running tflite on edge devices (such as RPI) with CPU only (no GPU) and do not seem to be actively maintained.

Describe the solution you'd like
Let's extract the pose detection part into its own repo and pypi package and offer it to the broader community for collaboration.

Describe alternatives you've considered
A clear and concise description of any alternative solutions or features you've considered.

Additional context
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