feat: LHCb modules migration

[AcquaDiGiorgio]

See #87

First approach, needs review.

I tried to use the current Mock classes (MockDataManager), but I don't think this is the correct way. However, it should not vary much.

I open it as a draft because I still need to create 2 more tests and change the interactions with DIRAC.

[AcquaDiGiorgio]

There is an issue with the FailoverRequest.
The DIRAC's workflow, during the finalize phase calls sendFailoverRequest, which through the ReqClient sends the stored requests at the workflow_commons dictionary to DIRAC.
Currently, in dirac-cwl we don't have persitency between command executions, so the operations created are lost.

[AcquaDiGiorgio]

This PR will now tackle the migration of every single module (starting from the ones used in MCSim) by importing LHCb specific functions instead of rewritting them from the ground up