Refactor axios icons

[maskudo]

This PR refactors the axios instance, restructures icons and utils, fixes typos and invalid prop names.

Description:

• Embed the authorization token in the axios instance
• Extract icons and utils into their respective files
• Fix prop names for SVGs
• More descriptive text for 'already subscribed' toast
• Fix subscribe button being stuck in loading state when the action fails

Benefits:

• Enhances readability
• Better maintainability

[netlify[bot]]

✅ Deploy Preview for gnomenepal ready!

Name	Link
🔨 Latest commit	b799743e85ef99f3d86103dbb15bf6a6b201d7e8
🔍 Latest deploy log	https://app.netlify.com/sites/gnomenepal/deploys/67271f0e255d30000893065c
😎 Deploy Preview	https://deploy-preview-67--gnomenepal.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 site configuration.

[utsavdotdev]

Great work @maskudo, Thanks for the contribution 🚀