Introduce a new command line option to set the `DamageMethod.name` of the damage assessment

A second damage computation will currently use the same method_id (DamageMethod.name = "Default"). The user should be able to choose a new name in order to distinguish the different methods (they could be based on different ShakeMaps or different parameters). This change also includes the creation of the respective damage views containing the DamageMethod.id or DamageMethod.name.