Harmonizes / usage with C# SDK

* Adds model proxy factory for creating proxies for paths with multiple endpoints
* Removes // usage in VABElementProxy
* Clarifies interface for IConnectorProvider

Change-Id: If7b6ffc77e44c860ae41cc999981b8b1229ab161
Signed-off-by: Daniel Espen <daniel.espen@iese.fraunhofer.de>
17 files changed