feat: 压缩图片

package.json

@@ -10,6 +10,7 @@
         "merge": "node ./src/img_merge.js",
         "water": "node ./src/water_market.js",
         "bg": "node ./src/product_main_img_bg.js",
+        "reduce": "node ./src/reduce_img_size.js",
         "pptToImg": "npm run ppt && npm run merge && npm run water && npm run cover && npm run bg",
         "pyToImg": "npm run merge && npm run water && npm run cover && npm run bg"
     },