Issue #3093993 by heddn, andypost, greg.1.anderson: Add options to handle database updates

automatic_updates.module

automatic_updates.services.yml

config/install/automatic_updates.settings.yml

config/schema/automatic_updates.schema.yml

scripts/automatic_update_tools

src/Annotation/DatabaseUpdateHandler.php

src/Command/BaseCommand.php

src/Command/CacheRebuild.php

src/Command/DatabaseUpdate.php

src/Command/DatabaseUpdateStatus.php

src/DatabaseUpdateHandlerInterface.php

src/DatabaseUpdateHandlerPluginBase.php

src/DatabaseUpdateHandlerPluginManager.php

src/Form/SettingsForm.php

src/Plugin/DatabaseUpdateHandler/ExecuteUpdates.php

src/Plugin/DatabaseUpdateHandler/IgnoreUpdates.php

src/Plugin/DatabaseUpdateHandler/MaintenanceModeActivate.php

...ugin/DatabaseUpdateHandler/MaintenanceModeDisactivate.php

src/Plugin/DatabaseUpdateHandler/RollbackUpdate.php

src/ReadinessChecker/MinimumPhpVersion.php