[3pt] - Create feature: add new like - Student A

When the user clicks on the Like button of an item (on Homepage), the interaction is recorded in the Involvement API and the screen is updated.

Start at the Homepage item and locate the Like button handler. Read how the project currently communicates with the Involvement API and updates the screen after interactions. Done means a click records the like in the API and the visible like state or count updates on the Homepage.

由索引模型根据 Issue 内容生成。