phpstan level 5 (#164)

* phpstan level 5

* deprecated query

Author: Rom1-B

composer.json

@@ -5,14 +5,19 @@
     "require-dev": {
         "glpi-project/tools": "^0.7.4",
         "php-parallel-lint/php-parallel-lint": "^1.4",
+        "phpstan/extension-installer": "^1.4",
         "phpstan/phpstan": "^2.1",
+        "phpstan/phpstan-deprecation-rules": "^2.0",
         "squizlabs/php_codesniffer": "^3.11"
     },
     "config": {
         "optimize-autoloader": true,
         "platform": {
             "php": "7.4.0"
         },
-        "sort-packages": true
+        "sort-packages": true,
+        "allow-plugins": {
+            "phpstan/extension-installer": true
+        }
     }
 }