feat: persist user preferences across browser sessions

[Mohataseem89]

Summary

This PR fixes #333 by persisting user preferences using localStorage, allowing settings to survive page refreshes and browser sessions.

Changes

• Added a reusable useLocalStorage hook.
• Persisted accent color.
• Persisted framework selection.
• Persisted preview size preferences.
• Persisted active tabs.
• Persisted accent selections.
• Automatically restores saved preferences on application startup.
• Included safe JSON parsing and fallback to default values.

Testing

• npm run build passes successfully.
• Verified that persisted preferences survive page refreshes.
• Verified that defaults are restored when no saved preference exists.

Fixes #333

[vercel]

@Mohataseem89 is attempting to deploy a commit to the Trivendra's projects Team on Vercel.

A member of the Team first needs to authorize it.

[Mohataseem89]

Hi @singhtrivendra,

Just following up on this PR. It looks like the Vercel deployment workflow is awaiting maintainer approval before the checks can run.

Whenever you have time, I'd appreciate a review. Please let me know if any changes are needed.

Thank you!