[ACA-3706] implement startedBy process filter property (#6077)

* [ACA-3706] implement startedBy filter property

* fix lint

* [ACA-3706] implement startedBy filter

* replace initiator with people cloud component

* small changes

* fix user selection mode

* revert unnecesary change

* fix e2e

* fix process filter e2e tests

* fix more e2e

Co-authored-by: Silviu Popa <p3701014@L3700101120.ness.com>

demo-shell/src/app/components/cloud/processes-cloud-demo.component.ts

@@ -116,6 +116,10 @@ export class ProcessesCloudDemoComponent implements OnInit, OnDestroy {
         }
     }
 
+    getInitiatorValue(): string {
+        return this.editedFilter.initiator?.map(initiator => initiator.username).join(',');
+    }
+
     onChangePageSize(event: Pagination) {
         this.userPreference.paginationSize = event.maxItems;
     }