feat：【ele】【mall】将 magic-cube-editor 迁移到 mall/promotion/components 中，聚焦一点

apps/web-ele/src/views/mall/promotion/components/index.ts

@@ -1,4 +1,5 @@
 export { default as AppLinkInput } from './app-link-input/index.vue';
 export { default as ColorInput } from './color-input/index.vue';
 export { default as InputWithColor } from './input-with-color/index.vue';
+export { default as MagicCubeEditor } from './magic-cube-editor/index.vue';
 export { default as VerticalButtonGroup } from './vertical-button-group/index.vue';