Added option for icon for buttons

Added cloud icon for Topic Cloud Dialog

src/app/components/shared/_dialogs/topic-cloud-filter/topic-cloud-filter.component.html

@@ -7,6 +7,7 @@
 <app-dialog-action-buttons
   buttonsLabelSection="content"
   confirmButtonLabel="continue"
+  buttonIcon="cloud"
 
   [cancelButtonClickAction]="cancelButtonActionCallback()"
   [confirmButtonClickAction]="confirmButtonActionCallback()"

src/app/components/shared/dialog/dialog-action-buttons/dialog-action-buttons.component.html

@@ -20,7 +20,7 @@
         class="mat-flat-button {{ confirmButtonType }}-confirm-button"
         attr.aria-labelledby="{{ ariaPrefix + 'confirm' | translate }}"
         (click)="performConfirmButtonClickAction()"
-      >{{ buttonsLabelSection + '.' + confirmButtonLabel | translate}}</button>
+      ><mat-icon *ngIf="buttonIcon" style="margin-right: 5px;">{{buttonIcon}}</mat-icon>{{ buttonsLabelSection + '.' + confirmButtonLabel | translate}}</button>
       <button
         *ngIf="cancelButtonClickAction !== undefined"
         type="button"

src/app/components/shared/dialog/dialog-action-buttons/dialog-action-buttons.component.ts

@@ -23,6 +23,11 @@ export class DialogActionButtonsComponent implements OnInit {
    */
   @Input() buttonsLabelSection: string;
 
+  /**
+   * Icon for confirm.
+   */
+  @Input() buttonIcon: string;
+
 
   /**
    * The i18n label identifier of the confirm button.