feat: 搭建微信小程序展示端

- 初始化小程序工程配置与类型声明

- 增加首页、律所、律师列表、详情与历史页面

- 补充公共组件、运行时配置与示例素材

frontend_miniprogram/miniprogram/pages/index/index.wxml

@@ -0,0 +1,28 @@
+<!--index.wxml-->
+<navigation-bar title="Weixin" back="{{false}}" color="black" background="#FFF"></navigation-bar>
+<scroll-view class="scrollarea" scroll-y type="list">
+  <view class="container">
+    <view class="userinfo">
+      <block wx:if="{{canIUseNicknameComp && !hasUserInfo}}">
+        <button class="avatar-wrapper" open-type="chooseAvatar" bind:chooseavatar="onChooseAvatar">
+          <image class="avatar" src="{{userInfo.avatarUrl}}"></image>
+        </button>
+        <view class="nickname-wrapper">
+          <text class="nickname-label">昵称</text>
+          <input type="nickname" class="nickname-input" placeholder="请输入昵称" bind:change="onInputChange" />
+        </view>
+      </block>
+      <block wx:elif="{{!hasUserInfo}}">
+        <button wx:if="{{canIUseGetUserProfile}}" bindtap="getUserProfile"> 获取头像昵称 </button>
+        <view wx:else> 请使用2.10.4及以上版本基础库 </view>
+      </block>
+      <block wx:else>
+        <image bindtap="bindViewTap" class="userinfo-avatar" src="{{userInfo.avatarUrl}}" mode="cover"></image>
+        <text class="userinfo-nickname">{{userInfo.nickName}}</text>
+      </block>
+    </view>
+    <view class="usermotto">
+      <text class="user-motto">{{motto}}</text>
+    </view>
+  </view>
+</scroll-view>