adding task integration with wizard and dialog framework (#1929)

* adding task integration with wizard and dialog framework

src/sql/parts/connection/common/connectionManagement.ts

@@ -320,12 +320,13 @@ export enum MetadataType {
 }
 
 export enum TaskStatus {
-	notStarted = 0,
-	inProgress = 1,
-	succeeded = 2,
-	succeededWithWarning = 3,
-	failed = 4,
-	canceled = 5
+	NotStarted = 0,
+	InProgress = 1,
+	Succeeded = 2,
+	SucceededWithWarning = 3,
+	Failed = 4,
+	Canceled = 5,
+	Canceling = 6
 }
 
 export interface IConnectionParams {