Add GenericObject plugin files and assets

- Introduced default icon images in PNG and SVG formats.
- Added example icons for car and cube in SVG format.
- Created setup file for the GenericObject plugin with versioning and directory definitions.
- Included a header file with licensing information for the plugin.
- Added a remove.txt file with instructions for safe deletion.

plugins/genericobject/inc/autoload.php

@@ -0,0 +1,95 @@
+<?php
+
+/**
+ * -------------------------------------------------------------------------
+ * GenericObject plugin for GLPI
+ * -------------------------------------------------------------------------
+ *
+ * LICENSE
+ *
+ * This file is part of GenericObject.
+ *
+ * GenericObject is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * GenericObject is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with GenericObject. If not, see <http://www.gnu.org/licenses/>.
+ * -------------------------------------------------------------------------
+ * @copyright Copyright (C) 2009-2022 by GenericObject plugin team.
+ * @license   GPLv3 https://www.gnu.org/licenses/gpl-3.0.html
+ * @link      https://github.com/pluginsGLPI/genericobject
+ * -------------------------------------------------------------------------
+ */
+
+class PluginGenericobjectAutoloader
+{
+   protected $paths = [];
+
+   public function __construct($options = null) {
+      if (null !== $options) {
+         $this->setOptions($options);
+      }
+   }
+
+   public function setOptions($options) {
+      if (!is_array($options) && !($options instanceof \Traversable)) {
+         throw new \InvalidArgumentException();
+      }
+
+      foreach ($options as $path) {
+         if (!in_array($path, $this->paths)) {
+            $this->paths[] = $path;
+         }
+      }
+      return $this;
+   }
+
+   public function processClassname($classname) {
+      preg_match("/^Plugin([A-Z][a-z0-9]+)([A-Z]\w+)$/", $classname, $matches);
+
+      if (count($matches) < 3) {
+         return false;
+      } else {
+         return $matches;
+      }
+
+   }
+
+   public function autoload($classname) {
+      $matches = $this->processClassname($classname);
+
+      if ($matches !== false) {
+         $plugin_name = strtolower($matches[1]);
+         $class_name = strtolower($matches[2]);
+
+         if ($plugin_name !== "genericobject") {
+            return false;
+         }
+
+         $filename = implode(".", [
+            $class_name,
+            "class",
+            "php"
+         ]);
+
+         foreach ($this->paths as $path) {
+            $test = $path . DIRECTORY_SEPARATOR . $filename;
+            if (file_exists($test)) {
+               return include_once($test);
+            }
+         }
+      }
+      return false;
+   }
+
+   public function register() {
+      spl_autoload_register([$this, 'autoload']);
+   }
+}