JsonSettingStore: declare properties used dynamically

To avoid PHP 8.2 deprecation notes like:
 DEPRECATED  Creation of dynamic property anlutro\LaravelSettings\JsonSettingStore::$files is deprecated in vendor/anlutro/l4-settings/src/JsonSettingStore.php on line 22.

   DEPRECATED  Creation of dynamic property anlutro\LaravelSettings\JsonSettingStore::$path is deprecated in vendor/anlutro/l4-settings/src/JsonSettingStore.php on line 45.

Author: lptn

src/JsonSettingStore.php

@@ -13,6 +13,12 @@
 
 class JsonSettingStore extends SettingStore
 {
+	/** \Illuminate\Filesystem\Filesystem */
+	public $files;
+
+	/** string Path to settings file. */
+	public $path;
+
 	/**
 	 * @param \Illuminate\Filesystem\Filesystem $files
 	 * @param string                           $path