!106 [轻量级pr] add 新增用户选择角色时 可搜索功能

* update src/views/system/user/index.vue.
* add 新增角色可搜索

src/views/system/user/index.vue

@@ -223,7 +223,7 @@
           </el-col>
           <el-col :span="12">
             <el-form-item label="角色" prop="roleIds">
-              <el-select v-model="form.roleIds" multiple placeholder="请选择">
+              <el-select v-model="form.roleIds" filterable multiple placeholder="请选择">
                 <el-option
                   v-for="item in roleOptions"
                   :key="item.roleId"