Title: Add side buttons in testimonial

[AlfiyaSiddique]

Is your feature request related to a problem? Please describe.

Yes, currently the testimonial has only automatic movable behavior and there are no left-right buttons to control the testimonials

Why should we add the testimonials button?
Adding testimonial buttons will improve the user experience as the user has the control to move the cards and it can be handy in situations where the user hasn't read a card fully but it moved on.

Describe the solution you'd like.

Use normal html css bootstrap and javascript to implement the buttons with functionality

Describe alternatives you've considered.

..

Add any other context or screenshots about the feature request here.

Sample Buttons Example:

slide.bar.mp4

Record

• I agree to follow this project's Code of Conduct
• I have checked the existing issues
• I'm a GSSoC'23 contributor
• I want to work on this issue

[AshitaBidkar]

I want to work on this project, kindly assign it to me.

[venk404]

@AlfiyaSiddique - We already have this feature already.