feat: add language selection and currency formatting options

src/app/HotelItem/HotelItem.component.html

@@ -1,5 +1,10 @@
 <p>Name: {{hotel.hotelName}}</p>
 <p>Description: {{hotel.description}}</p>
-<p>Price: {{hotel.price}}$</p>
+<p>Price: {{hotel.price | currency : "EUR" : "symbol" : "2.2-2" : "de-DE"}}</p>
+<select [ngModel]="selectedLanguage" (ngModelChange)="languageChange($event)">
+  @for (lang of langs; track lang.lang) {
+    <option value="{{lang.lang}}">{{lang.lang}}</option>
+  }
+</select>
 <img src="{{hotel.imageUrl}}" alt="Hotel">
 <p class="border-b border-black">{{hotel.rating}}</p>