Start work on Lingy/Python

[ingydotnet]

Lingy wants to support many hosting languages and Python seems like a good choice for the second one.

[ingydotnet]

See prior arts:

• https://github.com/basilisp-lang/basilisp
• https://github.com/clj-python/libpython-clj
• https://clj-python.github.io/libpython-clj/embedded.html