#11 Add GH actions for build and publish of python

[assambar]

Python's standard libraries are not part of the python binary.

Therefore we are publishing a python-aio-3.11.1.zip that contains both the wasm binary and the python311.zip with the standard libraries. Also the python311.zip is placed in its built-in PYTHONPATH location in usr/local/lib

python-aio-3.11.1/
├── bin
│   └── python-3.11.1.wasm
└── usr
    └── local
        └── lib
            └── python311.zip

Running the interpreter will require that the usr folder is pre-opened as /usr in the WASM sandbox.

wasmtime run --mapdir /::. bin/python-3.11.1.wasm -- -c "print('Hello')"
Could not find platform independent libraries <prefix>
Could not find platform dependent libraries <exec_prefix>
Hello

Note: while python prints the "platform (in|)dependent libraries" warning to stderr it works perfectly fine. So I suggest we debug this nuisance separately.

Note: python failed to build with wasi-sdk-16, but I could not solve this quickly, so re-added the wasi-sdk-16 builder for now.

[assambar]

The release action has been tested here - https://github.com/assambar/webassembly-language-runtimes/actions

[ereslibre]

Looking really good, thanks @assambar! Some comments.