bug fixes and minor enhancements

🐛 Bug fixes

• like button count increasing when different users like a post
• comments on other user's posts displays the correct username
• fix scroll glitch for items on footer

✨ Enhancements

• smoother loading screen and transitions
• minor ui/ux improvements - remove ordered list numbers, and add hover on posters in Search page
• trending hashtags now using live data from themoviedb
• refactor code - create custom hook for reusability, and remove dead code