CaloTowerBuilderBuilder: Retrieve CaloDetDescManager from CondStore

Rather naive migration of CaloTowerBuilderTool, CaloTowerBuilderBaseTool and LArFCalTowerBuilderTool to retriev the CaloDetDescrManager from the ConditionStore.

Like the previous implementation, this version does not support alignment changes. The Cell/Tower mapping is build on the first invocation of the tool. A better approach would be put the mapping in the ConditionStore by a dedicated condition-algorithm. The already-existing CaloTowerGeometry might be reusable for this purpose.

As far as I can tell, the only remaining client of the code toched here is Heavy-Ion reconstruction.