Added signup form and revamped phonebook.

vendor/vlucas/phpdotenv/src/Loader/LoaderInterface.php

@@ -0,0 +1,20 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Dotenv\Loader;
+
+use Dotenv\Repository\RepositoryInterface;
+
+interface LoaderInterface
+{
+    /**
+     * Load the given entries into the repository.
+     *
+     * @param \Dotenv\Repository\RepositoryInterface $repository
+     * @param \Dotenv\Parser\Entry[]                 $entries
+     *
+     * @return array<string,string|null>
+     */
+    public function load(RepositoryInterface $repository, array $entries);
+}