[fix]layergroup注册sm-slider

Author: luoxiao-supermap

src/mapboxgl/web-map/LayerGroup.vue

@@ -77,14 +77,16 @@ import Theme from 'vue-iclient/src/common/_mixin/Theme';
 import SmCollapse from 'vue-iclient/src/common/collapse/Collapse.vue';
 import SmCollapsePanel from 'vue-iclient/src/common/collapse/Panel.vue';
 import SmTree from 'vue-iclient/src/common/tree/Tree.vue';
+import SmSlider from 'vue-iclient/src/common/slider/Slider.vue';
 
 export default {
   name: 'LayerGroup',
   mixins: [Theme],
   components: {
     SmCollapse,
     SmCollapsePanel,
-    SmTree
+    SmTree,
+    SmSlider
   },
   props: {
     currentOpacity: {