feat: Add crowdfunding and sponsor management features

- Introduced fund_progress.txt to track server upgrade funding and vehicle replacement costs.
- Created sponsors.txt to log sponsorship contributions with details including name, project, amount, and date.
- Developed components.js for reusable UI components including navbar and footer.
- Implemented data_utils.js for parsing sponsor data and calculating totals.
- Added script.js for managing server status, crowdfunding display, and sponsor data fetching.
- Created sponsor_script.js for detailed sponsor data management, filtering, and UI interactions.
- Developed stats_script.js for player statistics display, including leaderboards and detailed player stats in a modal.

data/fund_progress.txt

@@ -0,0 +1,2 @@
+服务器升级M4 Mac Mini 32G,2740,5000
+给服主换车,0,290000