Adds XML converter support for new SubmodelElements

Adds new SubmodelElements MultiLanguageProperty, Range, Entity and BasicEvent
Adds support for new SubmodelElements to XML converter
Refactors example XML to comply with the new XML Schema

Change-Id: I27cb00b7b749af9ba7cae42cfb699f9688ac9401
Signed-off-by: Maximilian Conradi <maximilian.conradi@iese.fraunhofer.de>
25 files changed