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.

js/data_utils.js

@@ -0,0 +1,42 @@
+const DataUtils = {
+    parseSponsorsText: function(text) {
+        const sponsors = [];
+
+        if (!text) {
+            return sponsors;
+        }
+
+        const lines = text.trim().split('\n');
+        lines.forEach(line => {
+            const parts = line.split(',');
+            if (parts.length < 3) {
+                return;
+            }
+
+            const name = parts[0].trim();
+            const project = parts[1].trim();
+            const amountStr = parts[2].trim().replace('￥', '');
+            const amount = parseFloat(amountStr);
+            const date = parts[3] ? parts[3].trim() : '';
+
+            if (!isNaN(amount)) {
+                sponsors.push({ name, project, amount, date });
+            }
+        });
+
+        return sponsors;
+    },
+
+    buildSponsorTotals: function(sponsors) {
+        const totals = {};
+
+        sponsors.forEach(item => {
+            if (!totals[item.name]) {
+                totals[item.name] = 0;
+            }
+            totals[item.name] += item.amount;
+        });
+
+        return totals;
+    }
+};