add project description and support links

config/app.php.txt

@@ -1,5 +1,41 @@
 <?php
 
+/*
+ * YGGo! - Distributed & Open Source Web Search Engine
+ *
+ * MIT License
+
+ * Copyright (c) 2023 YGGverse
+
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ *
+ * Default configuration file example
+ * Production name: app.php
+ *
+ * Project home page
+ * https://github.com/YGGverse/YGGo
+ *
+ * Get support
+ * https://github.com/YGGverse/YGGo/issues
+ *
+ */
+
 // Debug
 ini_set('display_errors', '1');
 ini_set('display_startup_errors', '1');