Turn Python bindings into their own repo, with this repo as a submodule

[qdot]

Having the python bindings in this repo means trying to make API changes will be difficult. Would also be nice to finally make libnifalcon a python module downloadable from package managers. So, we should extract out the python stuff and make a libnifalcon-py repo with a submodule for the LKG version of libnifalcon for the bindings.