feat: create `/contributors` page, redirect index to `/teams`

[zeucapua]

Description

Only merge after #206! Moves the existing index page into the new /contributors page, and redirect users from the home page to /teams.

What type of PR is this? (check all applicable)

• [x] 🍕 Feature
• [ ] 🐛 Bug Fix
• [ ] 📝 Documentation Update
• [ ] 🎨 Style
• [ ] 🧑‍💻 Code Refactor
• [ ] 🔥 Performance Improvements
• [ ] ✅ Test
• [ ] 🤖 Build
• [ ] 🔁 CI
• [ ] 📦 Chore (Release)
• [ ] ⏩ Revert

Related Tickets & Documents

Closes #208

Mobile & Desktop Screenshots/Recordings

Steps to QA

1. Go to home page and see it's redirected /teams

2. Go to /contributors to see previous home page

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