[4pt] - Display Reservations pop up with selected item's details - Student C

Create a reservations popup only with the top section (displaying details of the selected item)

When the popup loads, the webapp retrieves data from the selected API and shows details about the selected item.

Add event to button prepared by your teammate that will open your popup. You need to communicate with your team member to make sure that you do not block each other (most likely the easiest solution is to merge the list of items feature to the dev branch before you try to add that event).

首先找到队友准备好的按钮，以及列表功能使用的选中项 API。实现预订弹窗的顶部区域，使其能够从该按钮打开，并在选中项的数据加载完成后显示其详细信息。

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