Add trigger lines and sequence for open VELO tomography

MR implementing trigger lines and sequence for VELO tomography with fully open VELO.

Documentation for the trigger lines development and performance can be found in this presentation. Additionally, I also run this morning on the 6.8 TeV fully VELO open 2023 MC sample, obtaining

Supersedes !1024 (closed) (which I will close when this is merged)

cc @cmarinbe @decianm @dovombru @rmatev @cocov @njurik @collinsp @edallocc @fpolci