cameratree增加loading效果

src/views/cameras/preview/CameraPreview.vue

@@ -2,7 +2,7 @@
   <div>
     <div class="cameraMain">
       <div class="cameraTree">
-        <CameraTreeCom :loading="loading" :camera-tree="cameraTree || []" />
+        <CameraTreeCom :loading="presetListStore.loading" :camera-tree="cameraTree || []" />
       </div>
       <div class="cameraSettingWrapper">
         <div class="cameraView">