[4pt] - Create feature: add new reservation - Student C

Implement the "add new reservation" form on the Reservations pop up according to the wireframe:

When the user clicks on the "Reserve" button, the data is recorded in the Involvement API and the screen is updated

从 Reservations 弹出窗口开始，跟踪现有的 Reserve 按钮流程。使用提供的线框图确定表单字段，通过 Involvement API 记录提交的数据，并验证添加预订后屏幕会更新。

由索引模型根据 Issue 内容生成。