初始化项目, 添加TDesign等包

miniprogram/miniprogram_npm/tdesign-miniprogram/back-top/back-top.wxml

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+<import src="../common/template/icon.wxml"/><wxs src="../common/utils.wxs" module="_"/><view style="{{_._style([style, customStyle])}}" class="class {{prefix}}-class {{_.cls(classPrefix, [['fixed', fixed], theme])}}" bindtap="toTop" aria-role="button" hidden="{{hidden}}"><view class="{{classPrefix}}__icon" aria-hidden><slot name="icon"/><template wx:if="{{_icon}}" is="icon" data="{{tClass: prefix + '-class-icon', ..._icon }}"/></view><view wx:if="{{!!text}}" class="{{classPrefix}}__text--{{theme}} {{prefix}}-class-text">{{text}}</view><slot/></view>