feat(index): 添加单次消费选项和支付功能

新增单次消费档位选择弹窗及支付功能
移除未使用的组件和配置文件

pages/index/index.wxml

@@ -24,4 +24,16 @@
     <view bindtap="toStart" class="scan-btn" wx:if="{{isScan}}">
         <view class="sha">立即启动</view>
     </view>
-</view>
+    <view class="one-time-modal" wx:if="{{showOneTimeOptions}}">
+        <view class="one-time-inner">
+            <view class="one-time-title">选择单次消费档位</view>
+            <view class="one-time-tip">限单次洗车</view>
+            <view class="one-time-list">
+                <view class="one-time-item" wx:for="{{oneTimeOptions}}" wx:key="index" bindtap="payOneTime" data-id="{{item.id}}">
+                    <view>支付{{item.paymentamount}}元 后到账{{item.arrivalamount}}元洗车金</view>
+                </view>
+            </view>
+            <view bindtap="closeOneTimeOptions" class="one-time-cancel">取消</view>
+        </view>
+    </view>
+</view>