mod:新增 1200*1020

frontend/src/views/Setting/index.vue

@@ -188,6 +188,7 @@ const mainImageSizeList = ref([
   { label: '768*768', value: 768 },
   { label: '800*800', value: 800 },
   { label: '1024*1024', value: 1024 },
+  { label: '1200*1200', value: 1200 },
   { label: '1400*1400', value: 1400 },
   { label: '1600*1600', value: 1600 },
 ]);