True multimer

[DimaMolod]

in this version alphafold,colabfold and af2plots are directly included into setup.cfg
without that the submodules are not properly installed after update for me.
I also included run_alphafold.py to alphapulldown module to avoid all these cumbersome and unstable manipulations load_module

it works for me when installed via source code like this:

cd AlphaPulldown
python -m build
pip install dist/*.tar.gz

then the rest of the conda dependencies frpm README.md and
pytest -s test/
however, pypi doesn't allow the inclusion of direct links to setup.cfg
which is another good reason for completely moving to conda (in env.yml one can also use pip dependencies, so that's cleaner and more safe)