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/checkins.js

@@ -0,0 +1,22 @@
+const express = require("express")
+const userService = require("../../../../services/userService")
+const router = express.Router()
+
+router.post("/", async (req, res) => {
+    const { stationId, platformId, latitude, longitude, distance } = req.body
+    const checkin = await userService.createCheckin({ distance, latitude, longitude, platformId, stationId, userId: req.user.id })
+    return res.status(200).json(checkin)
+})
+
+router.get("/", async (req, res) => {
+    const { limit, offset } = req.query
+    const checkins = await userService.getUserCheckins({ userId: req.user.id, limit, offset })
+    return res.status(200).json(checkins)
+})
+
+router.get("/count", async (req, res) => {
+    const checkins = await userService.getUserCheckinsCount({ userId: req.user.id })
+    return res.status(200).json(checkins)
+})
+
+module.exports = router