Added follow unfollow functionality connected from database in 'user to follow' component

[Shubh942]

Description

Users can now seamlessly follow and unfollow others directly from their feed, enhancing engagement.

Related Issue

59

Motivation and Context

Implement database operations for follow/unfollow actions within the feed, fostering community connections and engagement.

Screenshots or GIF (In case of UI changes):

Users can follow another user and also unfollow them.

Changes in database

Types of changes

• [ ] Bug fix (non-breaking change which fixes an issue)
• [x] New feature (non-breaking change which adds functionality)
• [ ] Breaking change (fix or feature that would cause existing functionality to change)

Checklist:

• [x] My code follows the code style of this project.
• [ ] My change requires a change to the documentation.
• [ ] I have updated the documentation accordingly.
• [ ] I have added tests to cover my changes.
• [x] All new and existing tests passed.