公共工具，添加防抖节流函数

Tevin

2024-04-09 d47574f80173c73cdb526c653dd6418d76416d6e

 forms/imagePicker/CImagePreview.vue

@@ -65,6 +65,9 @@
    },
    methods: {
        handleLoadError(index) {
            while (this.loadFail.length - 1 < index) {
                this.loadFail.push(false);
            }
            this.loadFail.splice(index, 1, true);
        },
        // option { current, urls }