Implement validation service: - Implemented first basic set of validation rules - Applied said rules to the HeightStructuresInput Related to Issue [WTI-927]git-svn-id: https://repos.deltares.nl/repos/WettelijkToetsInstrumentarium/trunk@6294 5a3db67b-de53-47b5-99c8-a1c30a6650e2Former-commit-id: fabed7dd3588e6eda70490091a6ff108d75e5942Former-commit-id: 6bff70afc1af75c2464a238d0ae8ffc44f717b88