Publish wheels to PyPI

**Describe the feature you'd like**
To be able to install sagemaker-training from wheels on pypi without having to compile extensions myself.

**How would this feature be used? Please describe.**
Users would leverage pip to install sagemaker-training, but not need to have compiler toolchain and python dev headers installed. The installation should be faster and less error prone.

**Describe alternatives you've considered**
Status quo: takes extra time to install this library from pypi, can error out if necessary build dependencies are missing. This is suboptimal, but the current state of things.

**Additional context**
This is also requested for sagemaker-sdk: https://github.com/aws/sagemaker-python-sdk/issues/3181