Add debounce to scroll event listener for better performance

[coderabbitai]

The scroll event fires frequently during scrolling, which may impact performance. Consider implementing debounce to improve performance.

As discussed in PR #46 and this comment by @tyaga001.

[tyaga001]

@pavanydg pls see if you want to continue working on this one.

[pavanydg]

@tyaga001 yeah sure. I will work on this.