WIP: init sorting-hat

Implementation of https://github.com/usegalaxy-eu/sorting-hat

This project aims to provide a generic dynamic destination.

It's composed of:

• destination_specifications.yaml: description of the different destinations
• tool_destinations.yaml: give of each tools their needs
• sorting_hat.py: the engine

Note that it already handle the resubmission of jobs if you reach a "Exceeded job memory limit": sorting_hat.py#L311-L318

So far, it doesn't suit for Slurm and I don't know if it can detect Slurm limits ...

The good point is that we have a good base in term list o tools.