Import internal type systems by name instead of location

**Describe the refactoring action**
Import internal type systems by name instead of location. E.g. `BasicTypeSystem.xml` imports `RutaInternalTypeSystem.xml` by location instead of by name.

**Expected benefit**
The `uima-bnd-plugin` is unable to handle import-by-location and issues a warning whenever such imports are hit. This happens *a lot* with ruta projects.