frontend: stick queue item buttons to right

frontend/src/lib/components/queue_item.svelte

@@ -10,9 +10,11 @@
 <div class="queue-item rounded">
     <p>{date}</p>
     <p class="ellipsis">{name}</p>
+    <div class="buttons">
         <ImgButton style="edit" name="Изменить" image={edit_btn}/>
         <ImgButton style="remove" name="Удалить" image={remove_btn}/>
     </div>
+</div>
 
 <style>
     /* Элемент в очереди */
@@ -28,6 +30,11 @@
         margin: 0.5rem;
     }
 
+    .buttons {
+        display: flex;
+        margin-left: auto;
+    }
+
     :global(.queue-item + .queue-item) {
         margin-top: 0.5rem;
     }