* first set of changes to experiment the registration of cms related apis
* Adding cms service entry to workbench
* Adding basic functionality for add remove reg servers and group
* Returning relative path as part of RegServerResult as string
* Removing the cms apis from core. Having mssql extension expose them for cms extension
* Propogating the backend name changes to apis
* Fixing some missing sqlops references
* Adding a sqltools service version with CMS apis available