feat: 优化关于页面的文件预览组件，移除不必要的导入和文档显示

feat: 更新银行管理页面的样式，调整添加银行卡按钮的背景色
feat: 添加加密货币充值功能，展示等待提示

src/views/trade-settings/bank-management/index.vue

@@ -140,7 +140,7 @@ onUpdated(() => {
               class="bg-gray-50 dark:bg-gray-900 rounded-xl p-4 flex items-center cursor-pointer transition-all duration-300 border-2 border-dashed border-gray-200 dark:border-gray-600"
               @click="handleAddCard"
             >
-              <div class="w-10 h-10 rounded-full bg-linear-to-r from-green-500 to-emerald-600 flex items-center justify-center mr-3">
+              <div class="w-10 h-10 rounded-full bg-primary flex items-center justify-center mr-3">
                 <ion-icon :icon="addOutline" class="text-white text-xl" />
               </div>
               <span class="font-semibold text-#151515 dark:text-white">{{ t('bankCard.list.addCard') }}</span>