feat(onboarding): add use state and toggle behavior for user onboarding selections

[magali-la]

🎯Type of Change (Select one or more):

• Feat ✨: New feature or functionality.

This PR...

Adds functional quiz, implementing use state to store user selections. Imports fonts into onboarding. Updated path for signup to route to Onboarding

---

📝 What I Did:

• Created selectedConcerns useState and toggleConcern function to update the state with the user's chosen concerns
• Added temporary navigation to dashboard without data storing logic
• Updated font to match the designs
• Added path from signup to onboarding page

---

🧪 How to Test (Steps to Verify):

1. Open the Netlify preview / or pull -u origin main from feat/onboarding branch
2. Open console in Chrome DevTools
3. Click on the button and ensure the selected button is included in the array and updating dynamically
4. Verify the button styling is not reverting to the gray hover state once the button is clicked

---

🤔 What I learned:

[netlify]

✅ Deploy Preview for mint-chip ready!

Name	Link
🔨 Latest commit	fad3933
🔍 Latest deploy log	https://app.netlify.com/projects/mint-chip/deploys/690fbb67a97d2d00083666c1
😎 Deploy Preview	https://deploy-preview-24--mint-chip.netlify.app
📱 Preview on mobile	Toggle QR Code... Use your smartphone camera to open QR code link.

---

To edit notification comments on pull requests, go to your Netlify project configuration.