Update installation

[rvhonorato]

Desired feature/enhancement

Simplify the installation

Motivation

The current installation involves quite a few steps, where you need to clone the repository, clone the fcc submodule, compile the fcc code, clone the fastrmsd-matrix submodule, compile the cade, install CNS (which is not trivial), make manual links and/or copy them to a hard-coded location.

All of this can be imensely simplified in a way we can simply pip install haddock3

Description

To simplify this installation a few steps are necessary.

1. Remove submodules: One option is to just add the c/c++ code to this project
2. Create a custom installation in setup.py: this can handle the compilation of the external code
3. Skip CNS compilation by providing pre-compiled binaries - which can only be used for academic purposes, this is can also be handled in setup.py
4. Update all references to the external code in their specific modules

Additional context