feat: Add user profile editing interface.

[Shanukeshri]

Related Issue

Closes #1068

Summary

Adds a user profile editing interface, allowing users to access and modify profile information through a dedicated Profile Settings section.

Changes Made

• Added a Profile Settings UI.
• Added editable fields for user profile information.
• Added local state management for profile updates.
• Improved navigation to profile management functionality.

Testing

• Verified that the Profile Settings page is accessible.
• Verified that profile fields can be edited successfully.
• Tested the UI locally for proper rendering and responsiveness.
• Confirmed there are no console errors during interaction.

Screenshots

Before

After

Checklist

• Code follows project style
• Tested locally
• No unrelated changes included

Notes

While implementing this feature, I observed that a complete profile management system would require additional backend and database support, including persistent storage of profile information, validation, profile image handling, and corresponding API endpoints.

Since Issue #1068 primarily focuses on the absence of a profile editing interface, this PR is intentionally limited to the frontend UI and local state management. The additional backend functionality is outside the scope of this contribution and may be addressed in a separate issue or follow-up PR.