Enable QueryStore tab to the database properties (#2200)

* initial commit

* adding prototypefile and server conditions

* Saving query store options completed, todo:tests

* adding LOC stings  according to the LOC version of the ms doc

* removing common constants

* merge conflict fix

* fixing null reference exception

* Adjusting the null reference exception property value in prototype.cs

* removing unused directive

* test fix that checks wrong value

* Purge query store data changes

* adding comment and uncommented the line

test/Microsoft.SqlTools.ServiceLayer.IntegrationTests/ObjectManagement/ObjectManagementTestUtils.cs

@@ -83,7 +83,8 @@ namespace Microsoft.SqlTools.ServiceLayer.IntegrationTests.ObjectManagement
                 AutoShrink = false,
                 AutoUpdateStatistics = true,
                 AutoUpdateStatisticsAsynchronously = false,
-                DatabaseScopedConfigurations = null
+                DatabaseScopedConfigurations = null,
+                QueryStoreOptions = null
             };
         }