Compile ifcodegen into a binary

Instead of deploying a virtualenv, which needs a lot of fiddling and easily breaks with python or virtualenv updates, it would be great to compile the ifcodegen into a binary.

This can be done using nuitka using this command:

python3.9 -m nuitka generate.py --follow-imports --static-libpython=yes

The important part is to use --static-libpython as otherwise we depend on the correct python version to be installed into the system.