[ADF-2494] Task Standalone - Provide a way to attach a form (#3459)

* button added for task standalone

* attach form component added

* slide-toggle position fixed

* tests added

* rebase fixed

* review fix

* test added & fixes

* tests fixes

* refresh task details

* tests fixed

* attachFormToATask test added

* formPreview test fixed

* adf-form test fixed

lib/process-services/task-list/components/task-details.component.html

@@ -39,12 +39,14 @@
                           (error)='onFormError($event)'
                           (executeOutcome)='onFormExecuteOutcome($event)'>
                 </adf-form>
-                <adf-task-standalone *ngIf="!hasFormKey()" 
-                [taskName]= "taskDetails.name"
-                [isCompleted]="isCompletedTask()"
-                [hasCompletePermission]="isCompleteButtonEnabled()"
-                [hideCancelButton]="true"
-                (complete)="onComplete()">
+                <adf-task-standalone *ngIf="!hasFormKey()"
+                                     [taskName]= "taskDetails.name"
+                                     [taskId]= "taskDetails.id"
+                                     [isCompleted]="isCompletedTask()"
+                                     [hasCompletePermission]="isCompleteButtonEnabled()"
+                                     [hideCancelButton]="true"
+                                     (complete)="onComplete()"
+                                     (formAttached)="onFormAttached()">
                 </adf-task-standalone>
             </div>
             <div *ngIf="!isAssigned()" id="claim-message-id">