[10] setup rector

[10] bundles: messenger

[10] bundles: var-dumper

[10] bundles: api platform

[10] bundles: easy admin

[10] bundles: notifier

[10] bundles: easy admin

[10] bundles: login link

[10] bundles: mercure and uid

[10] bundles: implement rate limiter

[10] bundles: setup Symfony 5.3

[10] Upgrade tips: setup Rector

[10] Upgrade tips: before adding return types

[10] Upgrade tips: deprecation warnings phpunit

[10] Upgrade tips: deprecation warnings