v7.4.0-BETA1

Changelog (v7.3.4...v7.4.0-BETA1)

• feature symfony/symfony#62135 [Config] Deprecate config builder generators (@nicolas-grekas)
• feature symfony/symfony#62129 [FrameworkBundle] Auto-generate config/reference.php to assist in writing and discovering app's configuration (@nicolas-grekas)
• feature symfony/symfony#62092 [Config][DependencyInjection] Deprecate the fluent PHP format for semantic configuration (@nicolas-grekas)
• feature symfony/symfony#62090 [Config] Deprecate setting a default value to a node that is required (@GromNaN)
• feature symfony/symfony#61919 [DependencyInjection] Deprecate ExtensionInterface::getXsdValidationBasePath() and getNamespace() (@nicolas-grekas)
• feature symfony/symfony#61894 [DependencyInjection][Routing] Handle declaring services and routes using PHP arrays that follow the same shape as corresponding yaml files (@nicolas-grekas)
• feature symfony/symfony#61860 [Config][DependencyInjection][Routing] Deprecate using $this or the internal scope of the loader from PHP config files (@nicolas-grekas)
• feature symfony/symfony#51273 [Config] Add ArrayNodeDefinition::acceptAndWrap() to list alternative types that should be accepted and wrapped in an array (@nicolas-grekas)
• feature symfony/symfony#61718 [Config] Add argument $singular to NodeBuilder::arrayNode() to decouple plurals/singulars from XML (@nicolas-grekas)
• feature symfony/symfony#61127 [Cache] Add TagAwareAdapterInterface to NullAdapter (@a.dmitryuk)