Moved Categories.cs from Deltares.DamEngine.Calculators.Tests to new project Deltares.DamEngine.TestHelpers because it is needed by Deltares.DamEngine.Interface.Tests as well. Set CanPerformSellmeijer4ForcesDesignPipingVoorbeeld1 to WIP. Added link to Copying.APGL.licenseheader in Deltares.DamEngine.Interface.Tests as well. Related to Issue [MWDAM-1113]