feat(monitor-list): add draggable-item CSS class with custom grab cursor

- Introduce .draggable-item CSS class for draggable elements
- Set cursor to 'grab' on hover and 'grabbing' while dragging

Author: TheBestPartOfMe

src/components/MonitorListItem.vue

@@ -1,6 +1,7 @@
 <template>
     <div>
         <div
+            class="draggable-item"
             :style="depthMargin"
             :draggable="monitor.type !== 'group'"
             :class="{ 'drag-over': dragOver }"
@@ -358,4 +359,12 @@ export default {
     background-color: rgba($primary, 0.05);
 }
 
+.draggable-item {
+    cursor: grab;
+
+    &.dragging {
+        cursor: grabbing;
+    }
+}
+
 </style>