Add voting rules and timezone to FC frame

[masvelio]

Link to Issue

Closes: #10928
Closes: #10880

Description of Changes

The PR replaces the contest prizes frame with voting rules frame in the Farcaster integration. Key changes include:

• Removed contestPrizes.tsx and added votingRules.tsx
• Updated time display format to include timezone using timeZoneName: 'longGeneric'
• Changed "Prizes" button to "Voting Rules" in the contest card
• Updated router paths to reflect the new voting rules endpoint

Test Plan

• create farcaster contest
• load the frame and verify that
• timezone is visible
• there is no prizes button anymore. Instead, there is voting rules button

Deployment Plan

1. n/a

Other Considerations

• n/a