Add confirmation dialog to delete publications.

frontend/src/app/pages/publication/publication.component.html

@@ -25,7 +25,7 @@
                     </div>
                 </div>
                 @if (isAuthorAndUserEquals) {
-                    <button type="button" matTooltip="Click to delete the publication" matTooltipPosition="left">
+                    <button type="button" (click)="deletePublication()" matTooltip="Click to delete the publication" matTooltipPosition="left">
                         <mat-icon>delete</mat-icon>
                         Delete
                     </button>