Fix: replace drag drop & clipboard dependencies with Angular CDK (#4362)

* Swap ngx-drag-drop dependency for Angular CDK

* Swap ngx-clipboard dependency for Angular CDK

src-ui/src/app/components/dashboard/widgets/saved-view-widget/saved-view-widget.component.ts

@@ -1,10 +1,8 @@
 import {
   Component,
-  EventEmitter,
   Input,
   OnDestroy,
   OnInit,
-  Output,
   QueryList,
   ViewChildren,
 } from '@angular/core'
@@ -53,18 +51,6 @@ export class SavedViewWidgetComponent
   @Input()
   savedView: PaperlessSavedView
 
-  @Output()
-  dndStart: EventEmitter<DragEvent> = new EventEmitter()
-
-  @Output()
-  dndMoved: EventEmitter<DragEvent> = new EventEmitter()
-
-  @Output()
-  dndCanceled: EventEmitter<DragEvent> = new EventEmitter()
-
-  @Output()
-  dndEnd: EventEmitter<DragEvent> = new EventEmitter()
-
   documents: PaperlessDocument[] = []
 
   unsubscribeNotifier: Subject<any> = new Subject()