Add python bindings

#1

From @ubruhin on Wed Feb 21 2018 22:04:53 GMT+0000 (UTC)

So we can script things :slight_smile:

May be related to #2 and #5.

Copied from original issue: https://github.com/LibrePCB/librepcb-rfcs/issues/4

#2

From @ubruhin on Wed Feb 21 2018 22:11:55 GMT+0000 (UTC)

@hephaisto already started with some experiments: https://github.com/hephaisto/LibrePCB/tree/python_bindings