feat: follow unfollow buttons and followers and following list

Description:

Added followers and following list in myprofile and follow/unfollow buttons in userprofile page

Type of Change:

• Bug Fix
• Feature Development
• Documentation

Testing:

• Tested on desktop
• Tested on mobile
• Tested in different browsers

Screenshots (if applicable):

Video Demo

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Link to code walkthrough

Checklist:

• Code follows project style guidelines
• Self-review completed
• No console errors
• TypeScript types are correct