Migrating beam spot

Adding a new version of T2 beam spot algorithm, which compared to the previous version now uses a tool for the computation logic. The alg. was migrated to the new AthenaMT framework using necessary write/read handles. Inside the alg there are two different settings (Run2/Run3) which were tested (for Run2) on the legacy and (for Run3) in the TriggerUpgradePackage in the IDCalo. This is not the final version of the alg rather first test which will after further discussion be augmented (in another merge request), especially for the decisions (and also adjusted to mimic previous online/validation monitoring which is currently using all the information, I think alg would also benefit from the doxygen documentation, which I will try to add in next merge request). In addition this merge contains change of precision tracking to use modular version in IDCalo. @smh @zgrout @bernius