Fix failing Loc lookups in hosting service (#679)

* Remove XUnit warnings which clogged up output

* Use default namespace to fix loc lookup errors
- Fixed errors due to localization change
- Also removed internals visible attribute that could cause subtle issues where the hosting service doesn't work for other apps if things change

* Add CI build and test for new projects

* Up version number so we can pick up fix in nuget packages

test/Microsoft.SqlTools.Hosting.UnitTests/ProtocolTests/EventContextTests.cs

@@ -23,7 +23,7 @@ namespace Microsoft.SqlTools.Hosting.UnitTests.ProtocolTests
             eventContext.SendEvent(CommonObjects.EventType, CommonObjects.TestMessageContents.DefaultInstance);
             
             // Then: The message should be added to the queue
-            Assert.Equal(1, bc.ToArray().Length);
+            Assert.Single(bc.ToArray());
             Assert.Equal(MessageType.Event, bc.ToArray()[0].MessageType);
         }
     }