Add badges, checkins, and transport endpoints

Introduce gamification and check-in support plus expanded transport/admin APIs. Added DDL for checkins, badges and user_badges. New repositories: badgeRepository, userBadgeRepository, checkinRepository. New routes: admin badge management, admin transport (lines/platforms/stations), public transport endpoints, user checkins and stations endpoints, and user badges on /me. Services updated: adminService (badge CRUD & user assignment), userService (checkins, badge queries), authService (hasAdminRights). Minor package.json name update. These changes implement database, repo, service and route wiring for badges, user_badins and checkin features and additional transport admin routes.

routes/api/v1/user/stations.js

@@ -0,0 +1,16 @@
+const express = require("express")
+const userService = require("../../../../services/userService")
+const router = express.Router()
+
+router.get("/", async (req, res) => {
+    const stationCheckinsCount = await userService.getUserUniqueStations({ userId: req.user.id })
+    return res.status(200).json(stationCheckinsCount)
+})
+
+router.get("/:stationId/checkins/count", async (req, res) => {
+    const { stationId } = req.params
+    const stationCheckinsCount = await userService.getUserStationCheckinsCount({ stationId, userId: req.user.id })
+    return res.status(200).json(stationCheckinsCount)
+})
+
+module.exports = router