Landing page update

[Mozibix]

🛠️ Fixes Issue ZeroOctave#1046

Closes ZeroOctave#1046

👨‍💻 Changes proposed

• chores: Changed the UI of the the landing page
• Feat: Added scroll animations
• Feat: Updated Preloader
• chores: Updated head element section
• chores: Updated title
• chores: updated colors
• Feat: used SCSS(SASS) for styling

✅ Check List (Check all the applicable boxes)

• You have linked this PR to the correct issue.
• My code doesn't break any part of the project (Zero Octave-Javascript-Projects).
• This PR does not contain plagiarized content.
• My Addition/Changes works properly and matches the overall repo pattern.
• The title of my pull request is a short description of the requested changes.

📄 Note to reviewers

📷 Screenshots