update navbar component for French localization and branding

client/src/app/components/navbar/navbar.component.html

@@ -1,32 +1,32 @@
 <mat-toolbar color="primary">
   <div class="container">
-    <div class="brand" [routerLink]="'/'">Demo</div>
+    <div class="brand" [routerLink]="'/'">Game Over'gne App</div>
     <div class="nav-actions">
       @if (getUser(); as user) {
         <button mat-button [matMenuTriggerFor]="userMenu">
           <mat-icon>account_circle</mat-icon>
-         Logged in as {{ user.username }}
+         Connecté en tant que {{ user.username }}
           <mat-icon>expand_more</mat-icon>
         </button>
         <mat-menu #userMenu="matMenu">
           @if (authService.hasRole('Administrator')) {
             <button mat-menu-item [routerLink]="'/admin'">
             <mat-icon>admin_panel_settings</mat-icon>
-              Admin
+              Administration
             </button>
           }
           <button mat-menu-item [routerLink]="'/profile'">
             <mat-icon>person</mat-icon>
-            Profile
+            Profil
           </button>
           <button mat-menu-item (click)="authService.logout().subscribe()">
             <mat-icon>logout</mat-icon>
-            Logout
+            Se déconnecter
           </button>
         </mat-menu>
       } @else {
-        <button mat-button [routerLink]="'/login'">Login</button>
-        <button mat-button [routerLink]="'/register'">Sign Up</button>
+        <button mat-button [routerLink]="'/login'">Se connecter</button>
+        <button mat-button [routerLink]="'/register'">S'inscrire</button>
       }
     </div>
   </div>