feat(视图): 视图计算字段支持复制

frontend/src/views/chart/view/ChartFieldEdit.vue

@@ -478,6 +478,12 @@
             :label="$t('dataset.operator')"
           >
             <template slot-scope="scope">
+              <el-button
+                type="text"
+                size="mini"
+                @click="copyField(scope.row)"
+              >{{ $t('dataset.copy') }}
+              </el-button>
               <el-button
                 v-if="scope.row.extField !== 0"
                 type="text"