feat: add province and city routes for registration

app/Http/Controllers/LocationController.php

@@ -0,0 +1,19 @@
+<?php
+
+namespace App\Http\Controllers;
+
+use App\Models\City;
+use Illuminate\Http\Request;
+use Illuminate\Http\JsonResponse;
+
+class LocationController extends Controller
+{
+    public function getCities($provinceId): JsonResponse
+    {
+        $cities = City::where('province_id', $provinceId)
+            ->orderBy('name')
+            ->get(['id', 'name']);
+
+        return response()->json($cities);
+    }
+}