Merge branch '381-algorithmId' into develop

src/main/java/org/orekit/rugged/api/Rugged.java

...va/org/orekit/rugged/intersection/BasicScanAlgorithm.java

...rekit/rugged/intersection/ConstantElevationAlgorithm.java

...va/org/orekit/rugged/intersection/IgnoreDEMAlgorithm.java

...org/orekit/rugged/intersection/IntersectionAlgorithm.java

...kit/rugged/intersection/duvenhage/DuvenhageAlgorithm.java

src/test/java/org/orekit/rugged/api/RuggedTest.java

...rg/orekit/rugged/intersection/BasicScanAlgorithmTest.java

...t/rugged/intersection/ConstantElevationAlgorithmTest.java

...rugged/intersection/duvenhage/DuvenhageAlgorithmTest.java