[UI Enhancement] Add Loading and Disabled States for Authentication Action Buttons

[Vidheendu]

Description

Improves authentication action buttons by adding proper loading and disabled states during async operations, enhancing UX and preventing duplicate submissions.

**Fixes #58

Changes Made

• Added loading states for Login and Signup buttons

• Disabled buttons during async form submissions

• Prevented duplicate rapid submissions

• Added contextual loading feedback:

  • "Loading..."
  • "Creating..."

• Improved button reset behavior after failed requests

• Added consistent disabled-state styling for authentication buttons

Checklist

• I have linked the relevant issue above.
• I have tested my changes locally.
• My code follows the project's style guidelines.

[vercel]

@Vidheendu is attempting to deploy a commit to the Mayo's projects Team on Vercel.

A member of the Team first needs to authorize it.

[Vidheendu]

@mayo-byte07
I’ve completed the implementation for loading and disabled states on authentication action buttons and submitted a PR for review.

Implemented:

• Loading states for Login & Signup buttons
• Disabled states during async operations
• Prevention of duplicate submissions
• Consistent loading feedback and styling

Looking forward to your feedback. Thanks!