feat: 添加分享功能，支持分享活动详情至微信和时间线

packages/app/src/pages/home/activity/detail/index.vue

@@ -200,6 +200,9 @@ onLoad(async (query: { id: string; type: 'activity' | 'studyTour' }) => {
   await setSignups()
   await setLevels()
 })
+
+onShareAppMessage(() => ({ title: data.value.name, imageUrl: data.value.thumbnailUrl }))
+onShareTimeline(() => ({ title: data.value.name, imageUrl: data.value.thumbnailUrl }))
 </script>
 <template>
   <div