refactor - move rawmodel to modelling

CHANGELOG

CMakeLists.txt

actions/doc/index_dev.rst

actions/pm-build-rawmodel

doc/contributing.rst

doc/developers.rst

doc/gettingstarted.rst

loop/pymod/__init__.py

loop/pymod/export_monte_carlo.cc

loop/src/CMakeLists.txt

loop/src/backbone_loop_score.hh

loop/src/loop_candidate.hh

loop/src/monte_carlo_sampler.hh

loop/src/monte_carlo_scorer.hh

modelling/CMakeLists.txt

modelling/doc/CMakeLists.txt

modelling/doc/index.rst

modelling/pymod/CMakeLists.txt

modelling/pymod/__init__.py

modelling/pymod/_closegaps.py