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/calls/create_item.php

@@ -0,0 +1,40 @@
+<?php
+session_start();
+if (!isset($_SESSION['name'])) {
+    http_response_code(401);
+    echo json_encode(['message' => 'Unauthorized']);
+    die;
+}
+
+require_once 'config/db.php';
+
+$data = json_decode(file_get_contents("php://input"));
+
+if (isset($data->cityName) && isset($data->country) && isset($data->flag) && isset($data->date) && isset($data->notes) && isset($data->lat) && isset($data->lng) ) {
+    $date = new DateTime($data->date);
+    $data->date = $date->format('Y-m-d');
+    
+    $query = "INSERT INTO items (cityName, country, flag, date, notes, lat, lng) VALUES (:cityName, :country, :flag, :date, :notes, :lat, :lng)";
+    $stmt = $pdo->prepare($query);
+
+    $stmt->bindParam(':cityName', $data->cityName);
+    $stmt->bindParam(':country', $data->country);
+    $stmt->bindParam(':flag', $data->flag);
+    $stmt->bindParam(':date', $data->date);
+    $stmt->bindParam(':notes', $data->notes);
+    $stmt->bindParam(':lat', $data->lat);
+    $stmt->bindParam(':lng', $data->lng);
+    
+
+    if ($stmt->execute()) {
+        $data->id = $pdo->lastInsertId();
+        echo json_encode(['message' => 'Item created successfully','id' => $data->id ,'id' => $data->id, 'cityName' => $data->cityName, 'country' => $data->country, 'flag' => $data->flag, 'date' => $data->date, 'notes' => $data->notes, 'lat' => $data->lat, 'lng' => $data->lng ]);
+    } else {
+        http_response_code(500);
+        echo json_encode(['message' => 'Failed to create item']);
+        
+    }
+} else {
+    http_response_code(400);
+    echo json_encode(['message' => 'Invalid input']);
+}