[HOT-FIX] Player ChartsCopied!

• Chart dates are now stored and returned in Unix timestamps, allowing client-side conversion to the user's local timezone

• API rework:

  • Data is now stored per server per day for long-term scalability

  • Timestamps are grouped dynamically based on the selected range:

    • 24h / 48h: 30-minute blocks

    • 7d: 6-hour blocks

    • 30d: 12-hour blocks

    • 1y: daily blocks

• Frontend now converts and formats Unix timestamps into DD-MM-YYYY HH:mm based on the user's local timezone

• Ensured no duplicate timestamps and added fallback for offline servers (player count = 0)