Add config php class and use it for api key an shortcuts in snips

php/config.php

@@ -1 +1,62 @@
 <?php
+
+require_once __DIR__ . '/functions.php';
+
+readonly class config
+{
+    private const CONFIG_BASE_PATH = '.config';
+
+    public function __construct(
+        private string $name
+    )
+    {
+        $this->init();
+    }
+
+    public function get(string $key, mixed $default = null): mixed
+    {
+        $config = include $this->getConfigFile();
+        return $config[$key] ?? $default;
+    }
+
+    public function set(string $key, mixed $value): void
+    {
+        $config = include $this->getConfigFile();
+        $config[$key] = $value;
+        $this->writeConfig($config);
+    }
+
+    private function getConfigFile(): string
+    {
+        return path(
+            $this->getConfigPath(),
+            'config.php'
+        );
+    }
+
+    private function getConfigPath(): string
+    {
+        return path(
+            getenv('HOME'),
+            self::CONFIG_BASE_PATH,
+            $this->name
+        );
+    }
+
+    private function init(): void
+    {
+        if (file_exists($this->getConfigFile())) {
+            return;
+        } else {
+            if (!is_dir($this->getConfigPath())) {
+                mkdir($this->getConfigPath(), 0755, true);
+            }
+            $this->writeConfig([]);
+        }
+    }
+
+    public function writeConfig(array $config): void
+    {
+        file_put_contents($this->getConfigFile(), '<?php return ' . var_export($config, true) . ';');
+    }
+}