Add confirmation dialog to delete publications.

frontend/src/app/components/confirmation-dialog/confirmation-dialog.component.html

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+<h1>{{title}}</h1>
+<h2>{{description}}</h2>
+<footer>
+    <button type="button" class="secondary" (click)="closeDialog()">
+        No
+    </button>
+    <button type="button" (click)="closeAndValidate()">
+        Yes
+    </button>
+</footer>

frontend/src/app/components/confirmation-dialog/confirmation-dialog.component.scss

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+:host {
+    display: flex;
+    flex-direction: column;
+    text-align: center;
+    padding: 1em;
+
+    footer {
+        display: flex;
+        flex-direction: row;
+        justify-content: space-between;
+
+        button {
+            padding: .8em 1.2em;
+            border-radius: 10em;
+            border: none;
+            background-color: #3f51b5;
+            color: white;
+            transition: background-color .2s ease-in-out;
+            cursor: pointer;
+            display: flex;
+            justify-content: center;
+            align-items: center;
+        
+            &:hover {
+                background-color: #5b6ed8;
+            }
+        
+            &.secondary {
+                color: #3f51b5;
+                background-color: white;
+        
+                &:hover {
+                    background-color: #f2f4ff;
+                    cursor: pointer;
+                }
+            }
+        }
+    }
+}

frontend/src/app/components/confirmation-dialog/confirmation-dialog.component.ts

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+import { Component, inject, Input } from "@angular/core";
+import { MAT_DIALOG_DATA, MatDialogRef } from "@angular/material/dialog";
+
+export interface ConfirmationDialogData {
+    title: string;
+    description: string;
+}
+
+@Component({
+    selector: 'app-confirmation-dialog',
+    standalone: true,
+    templateUrl: './confirmation-dialog.component.html',
+    styleUrl: './confirmation-dialog.component.scss',
+    imports: []
+})
+export class ConfirmationDialog {
+    private readonly dialogRef = inject(MatDialogRef<ConfirmationDialog>);
+    data: ConfirmationDialogData = inject(MAT_DIALOG_DATA);
+
+    get title(): string {
+        return this.data.title;
+    }
+
+    get description(): string {
+        return this.data.description;
+    }
+
+    closeAndValidate(): void {
+        this.dialogRef.close(true);
+    }
+
+    closeDialog(): void {
+        this.dialogRef.close(false);
+    }
+}