Improve Accessibility of Components

src/app/components/dropdown/dropdown.html

@@ -7,11 +7,12 @@
 </div>
 
 @if (isOpen()) {
-  <ul class="dropdown-list" role="listbox">
+  <ul class="dropdown-list" role="listbox" [id]="dropdownId + '-listbox'">
     @for (option of normalizedOptions(); track option.value; let i = $index) {
       <li
         class="dropdown-item"
         role="option"
+        [id]="dropdownId + '-option-' + i"
         [class.selected]="option.value === value()"
         [class.focused]="i === focusedIndex()"
         [attr.aria-selected]="option.value === value()"