Add GLPI 11 compatibility (v2.8.0)

[loulouontop]

Summary

This PR adds compatibility with GLPI 11.x while keeping support for GLPI 10.0.5+.

Changes (GLPI 11 / Symfony-related)

• Version requirements: Extended to GLPI 11.99 in setup.php and behaviors.xml.
• Method signatures: Added return types for CommonGLPI/CommonDBTM (e.g. canCreate(): bool, getTypeName(): string) to match GLPI 11.
• No direct SQL: Replaced raw $DB->queryOrDie() with Migration::addPreQuery() / addPostQuery() for table creation and notification updates (GLPI 11 "Executing direct queries is not allowed").
• Query builder: All $DB->request('table', $criteria) updated to $DB->request(['FROM' => 'table', 'WHERE' => $criteria]); raw SQL converted to array syntax where needed.
• Input handling: Removed addslashes / Toolbox::addslashes_deep (handled by GLPI 11).
• Config/init: Safe checks for $CFG_GLPI['asset_types']; optional plugin_behaviors_check_prerequisites(); guarded dropField with fieldExists.
• Front scripts: Removed deprecated includes.php; replaced Html::displayErrorAndDie() with message + Html::back().
• Install: Try/catch in install with user-visible error message; __DIR__ for requires; DBConnection fallbacks for charset/collation.

Tested on GLPI 11.x. Original authors: Remi Collet, Nelly Mahu-Lasson.