Manual sweep of !29581 to 21.0: Make Birks' Law parameters configurable for Tile and MBTS

For Run 3 we plan to re-tune the values of the constants used in the implementation of Birks's law in the LAr and Tile simulation code. In order to do this more easily this merge request makes the values of the constants into configurable properties, so they can be altered without the need for re-compilation.

Part of changes required for ATLASSIM-4403.