Make WaveConditions classes and StabilityStoneCover calculations ICloneable Related to Issue [WTI-1371]git-svn-id: https://repos.deltares.nl/repos/WettelijkToetsInstrumentarium/trunk@11796 5a3db67b-de53-47b5-99c8-a1c30a6650e2Former-commit-id: 5d3ee2483fb798cd0296a6d39f274dfeb44052bdFormer-commit-id: 9a86f0a450a3fa366dba727919d38f157b091496