Clean-up of PartPropSvc configuration
Adding a Cfg method for PartPropSvc (located in AthenaServices).
Updated clients that were already configuring PartPropSvc to use the new Cfg method and ensured that they have a ServiceHandle if this was missing.
Also moved the headers of a couple of Algorithms in ISF_FastCaloSimParameterization (one of which was a PartPropSvc client) to the src directory.