N°4280 Handle modules with non existing model.*.php files imported (#295)

We were crashing iTop when having a module with : 
* in the 'datamodel' key in the module.*.php file a 'model.*.php' declared
* no model.*.php file in the module sources
* no model.*.php generated after compilation

This behavior is improved : 
* if isdevenv an exception will be thrown detailing which module is concerned
* else : 
  - model.*.php won't be added in iTop datamodel autoload
  - a SetupLog::Error will be made

setup/modelfactory.class.inc.php

@@ -139,7 +139,15 @@ class MFModule
 	 */
 	protected $sAutoSelect;
 	/**
-	 * @var array
+	 * @see ModelFactory::FindModules init of this structure from the module.*.php files
+	 * @var array{
+	 *          business: string[],
+	 *          webservices: string[],
+	 *          addons: string[],
+	 *     }
+	 * Warning, there are naming mismatches between this structure and the module.*.php :
+	 * - `business` here correspond to `datamodel` in module.*.php
+	 * - `webservices` here correspond to `webservice` in module.*.php
 	 */
 	protected $aFilesToInclude;