feat: Add native Android driver tracking app and real-time backend/frontend bus tracking system

backend/src/main/java/com/rit/portal/controller/BusLocationController.java

@@ -0,0 +1,53 @@
+package com.rit.portal.controller;
+
+import com.rit.portal.dto.DriverLocationUpdate;
+import com.rit.portal.model.BusLocation;
+import com.rit.portal.service.BusLocationService;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.http.HttpStatus;
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.bind.annotation.*;
+import java.util.List;
+import java.util.Map;
+
+@RestController
+@RequestMapping("/api/bus-locations")
+@CrossOrigin(originPatterns = "*")
+public class BusLocationController {
+
+    @Autowired
+    private BusLocationService busLocationService;
+
+    private static final String REQUIRED_PIN = "RITDRIVER";
+
+    @PostMapping("/{routeNumber}")
+    public ResponseEntity<Map<String, String>> updateLocation(
+            @PathVariable String routeNumber,
+            @RequestBody DriverLocationUpdate update) {
+        
+        if (update == null || update.getLatitude() == null || update.getLongitude() == null) {
+            return ResponseEntity.badRequest().body(Map.of("error", "Invalid coordinates"));
+        }
+        
+        if (!REQUIRED_PIN.equals(update.getPin())) {
+            return ResponseEntity.status(HttpStatus.UNAUTHORIZED).body(Map.of("error", "Invalid driver PIN"));
+        }
+
+        busLocationService.updateLocation(routeNumber, update.getLatitude(), update.getLongitude());
+        return ResponseEntity.ok(Map.of("status", "success", "message", "Location updated successfully"));
+    }
+
+    @GetMapping
+    public ResponseEntity<List<BusLocation>> getActiveLocations() {
+        return ResponseEntity.ok(busLocationService.getActiveLocations());
+    }
+
+    @GetMapping("/{routeNumber}")
+    public ResponseEntity<BusLocation> getLocation(@PathVariable String routeNumber) {
+        BusLocation loc = busLocationService.getLocation(routeNumber);
+        if (loc == null) {
+            return ResponseEntity.notFound().build();
+        }
+        return ResponseEntity.ok(loc);
+    }
+}