feat(modal): add confirm and confirm delete modals with tests

- Implemented ConfirmModalComponent and ConfirmDeleteModalComponent for confirmation dialogs.
- Added modal service methods to open confirm and confirm delete modals.
- Created corresponding HTML and SCSS files for both modal components.
- Updated ReutilizablesTestPageComponent to utilize new modals.
- Enhanced modal service tests to cover new functionality.
- Refactored existing tests to accommodate changes in modal behavior and structure.

src/app/shared/components/confirm-modal/confirm-modal.component.html

@@ -0,0 +1,12 @@
+<div class="confirm-modal">
+  <p class="confirm-modal__content">{{ data.content }}</p>
+
+  <div class="confirm-modal__actions">
+    <app-button variant="secondary" (click)="cancel()">
+      {{ data.cancelLabel }}
+    </app-button>
+    <app-button (click)="confirm()">
+      {{ data.confirmLabel }}
+    </app-button>
+  </div>
+</div>