replaced basic auth with openid-connect

.gitlab/deployment_scripts/update_secret.sh

chart/templates/deployment.yaml

metager/app/Http/Controllers/AdminInterface.php

metager/app/Http/Kernel.php

metager/composer.json

metager/composer.lock

metager/config/auth.php

metager/config/keycloak-web.php

metager/config/metager/metager.php

metager/database/seeders/DatabaseSeeder.php

metager/database/seeders/UsersSeeder.php

metager/routes/cookie.php

metager/routes/session.php

metager/routes/web.php