Added backend and refactored frond-end to support it.

* Removed unecesery home page
* Added PHP Api that provides auth and replaces the json-server for data storage
* Added support for alternate geocode-api
* Added registration  page

api/auth/register.php

@@ -0,0 +1,34 @@
+<?php
+require_once 'config/auth.php';
+
+if (!$AllowUserRegistration){
+    echo json_encode(['message' => 'Endpoint not found']);
+    http_response_code(404);
+    die;
+}
+
+require_once 'config/db.php';
+$data = json_decode(file_get_contents("php://input"));
+
+if (isset($data->username) && isset($data->password) && isset($data->name)) {
+    $username = $data->username;
+    $password = password_hash($data->password, PASSWORD_BCRYPT);
+    $name = $data->name;
+
+    $query = "INSERT INTO users (username, password, name) VALUES (:username, :password, :name)";
+    $stmt = $pdo->prepare($query);
+
+    $stmt->bindParam(':username', $username);
+    $stmt->bindParam(':password', $password);
+    $stmt->bindParam(':name', $name);
+
+    if ($stmt->execute()) {
+        echo json_encode(['message' => 'User registered successfully']);
+    } else {
+        echo json_encode(['message' => 'User registration failed']);
+    }
+} else {
+    http_response_code(400);
+    echo json_encode(['message' => 'Missing name, username or password']);
+}
+?>