XEvent Profiler initial event handlers (#456)

* Bump SMO to 140.2.5 to pick-up private XEvent binaries

* Pick up SMO binaries from the build lab

* Add ProfilerService class placeholder

* Update SMO nuget package to include DB Scoped XEvents

* Stage changes

* Stage changes

* Update SMO to use RTM dependencies and remove separate SqlScript package

* Stage changes

* Iterate on profiler service

* Fix post-merge break in localization

* More refactoring

* Continue iterating on profiler

* Add test profiler listener

* Address a couple of the code review feedback

* Fix AppVeyor build break

* Use self-cleaning test file

src/Microsoft.SqlTools.ServiceLayer/Scripting/ScriptingService.cs

@@ -213,12 +213,12 @@ namespace Microsoft.SqlTools.ServiceLayer.Scripting
         {
             if (!disposed)
             {
+                disposed = true;
+                
                 foreach (ScriptingScriptOperation operation in this.ActiveOperations.Values)
                 {
                     operation.Dispose();
                 }
-
-                disposed = true;
             }
         }