Improving interactivity of home page. By adding animation on scroll.

No interactivity and a static home page. Assign this issue to me under the label of gssoc23

I would like to add animation on scroll, using the package AOS, it gives us various options to add different type of animations when the user scrolls

https://github.com/akshitagupta15june/PetMe/assets/88764668/8d3d61d3-b095-4254-b98f-3b1ced37f001