feat: create app constants

config/filesystems.php

@@ -99,7 +99,7 @@
     */
 
     'links' => [
-        public_path('storage') => env('APP_ENV') === 'production'
+        public_path('storage') => env('APP_ENV') === \CSlant\Blog\Core\Constants\AppConstant::APP_ENV_PROD
             ? env('FILESYSTEM_FILE_ROOT', storage_path('app/public'))
             : storage_path('app/public'),
     ],

src/Constants/AppConstant.php

@@ -0,0 +1,13 @@
+<?php
+
+namespace CSlant\Blog\Core\Constants;
+
+class AppConstant
+{
+    public const APP_NAME = 'CSlant Blog';
+
+    public const APP_AUTHOR = 'CSlant';
+
+    // App Environment: local, staging, production
+    public const APP_ENV_PROD = 'production';
+}