Merge branch 'refactor_lddt_pli' into develop

actions/ost-compare-ligand-structures

modules/doc/actions.rst

modules/mol/alg/doc/molalg.rst

modules/mol/alg/pymod/CMakeLists.txt

modules/mol/alg/pymod/chain_mapping.py

modules/mol/alg/pymod/lddt.py

modules/mol/alg/pymod/ligand_scoring.py

modules/mol/alg/pymod/ligand_scoring_base.py

modules/mol/alg/pymod/ligand_scoring_lddtpli.py

modules/mol/alg/pymod/ligand_scoring_scrmsd.py

modules/mol/alg/tests/test_ligand_scoring.py