Add RTA/2024.05.08 stack

First release of HLT for next week and beyond (VDM/BGI+physics). See https://gitlab.cern.ch/groups/lhcb/-/milestones/25#tab-merge-requests

Release checklist (to be filled by the shifter)

• release build validation (to be checked with the MR author)
• RPMs deployment
• CVMFS installation
• web pages update