feat: add GPS tracking with Traccar integration

- Add GPS module with Traccar client service for device management
- Add driver enrollment flow with QR code generation
- Add real-time location tracking on driver profiles
- Add GPS settings configuration in admin tools
- Add Auth0 OpenID Connect setup script for Traccar
- Add deployment configs for production server
- Update nginx configs for SSL on GPS port 5055
- Add timezone setting support
- Various UI improvements and bug fixes

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

backend/src/gps/dto/location-response.dto.ts

@@ -0,0 +1,51 @@
+export class DriverLocationDto {
+  driverId: string;
+  driverName: string;
+  driverPhone: string | null;
+  deviceIdentifier: string;
+  isActive: boolean;
+  lastActive: Date | null;
+  location: LocationDataDto | null;
+}
+
+export class LocationDataDto {
+  latitude: number;
+  longitude: number;
+  altitude: number | null;
+  speed: number | null; // mph
+  course: number | null;
+  accuracy: number | null;
+  battery: number | null;
+  timestamp: Date;
+}
+
+export class DriverStatsDto {
+  driverId: string;
+  driverName: string;
+  period: {
+    from: Date;
+    to: Date;
+  };
+  stats: {
+    totalMiles: number;
+    topSpeedMph: number;
+    topSpeedTimestamp: Date | null;
+    averageSpeedMph: number;
+    totalTrips: number;
+    totalDrivingMinutes: number;
+  };
+  recentLocations: LocationDataDto[];
+}
+
+export class GpsStatusDto {
+  traccarAvailable: boolean;
+  traccarVersion: string | null;
+  enrolledDrivers: number;
+  activeDrivers: number;
+  settings: {
+    updateIntervalSeconds: number;
+    shiftStartTime: string;
+    shiftEndTime: string;
+    retentionDays: number;
+  };
+}