[ADF-2054] Created a new widget to handle uploading file from Share (#2810)

* [ADF-2054] start creating custom upload widget for share integration

* [ADF-2054] changed content node selector service to allow different opening approach

* [ADF-2054] addedd support for multi resource files

* [ADF-2054] fixed base case for upload when only local files are selected

* [ADF-2054] start adding and fixing tests for new share attach button widget

* [ADF-2054] changed test to perfrom a correct check

* [ADF-2054] removed fdescribe

* [ADF-2054] added test for share-widget component

* [ADF-2054] added peer reviews changes

* [ADF-2054] created a module folder for content widgets

* [ADF-2054] fixed wrong import

* [ADF-2054] fixed rebase errors

* [ADF-2054] restored some files changed by rebase

* [ADF-2054] added link to content services to fix packaging issue

* [ADF-2054] renamed widget

lib/content-services/content-node-selector/content-node-selector.component.html

@@ -11,6 +11,7 @@
         [dropdownSiteList]="dropdownSiteList || data?.dropdownSiteList"
         [rowFilter]="rowFilter || data?.rowFilter"
         [imageResolver]="imageResolver || data?.imageResolver"
+        [isSelectionValid]="data?.isSelectionValid"
         (select)="onSelect($event)">
     </adf-content-node-selector-panel>
 </section>