feat: implement full CRUD functionality for jalan, parsil, and spbu modules including database integration and map interaction features

spbu/db_connect.php

@@ -0,0 +1,17 @@
+<?php
+$host = "localhost";
+$user = "root";
+$pass = "";
+$db   = "webgis_spbu";
+
+// Coba koneksi ke server dan pilih database
+$conn = new mysqli($host, $user, $pass, $db);
+
+if ($conn->connect_error) {
+    die("Koneksi gagal: " . $conn->connect_error);
+}
+// Set charset
+$conn->set_charset("utf8mb4");
+
+// Jika di-include oleh file API, biarkan $conn tersedia
+?>